# Motion

Document Sample

```					                  Physics Concepts to be Tested
End of Course Assessment
Question Bank
Motion                                                Work
 Units                                             Heat
 Velocity
 Acceleration                               Gravity
 Free fall                                      Newton’s law
 Projectile motion
Waves
Forces                                            Types of waves
     Newton’s first law                       Electromagnetic spectrum
     Newton’s second law
     Newton’s third law                    Electricity and Magnetism
     Equilibrium                               Electrostatics
 Magnetic Fields
Momentum                                           Induction
 Impulse                                        Generators/ Motors
 Conservation                                   Ohms Law
 Elastic/ inelastic collisions
Other Science
Energy                                             Relativity
 KE                                            Nuclear reactions
 PE

The Kentucky Core Content 4.1 and the Program of studies does not adequately reflect
sufficient content knowledge to be proficient in the study of Physics. This bank of test
questions is designed to address content in what is to be considered a traditional
college prep physics class and, while it contains necessary core content, addresses
content beyond the state expectation.

Bold answer choices indicate correct response
Motion
DOK 1: These questions are selected to measure student’s recollection of basic principles in
physics. Most of these questions are designed to aid in student responses to later questions.

Which of the following is the equation for average velocity?
a.                                                c. v      = xt

b.                                                d.

Which of the following units is the SI unit of velocity?
a. meter                                           c. meter per second
b. metersecond                                    d. second per meter

Acceleration is defined as
a. a rate of displacement.                        c. the change in velocity.
b. the rate of change of displacement.            d. the rate of change of velocity.
Which of the following is the equation for acceleration?
a.                                                 c. a = vt

b.                                                d.

What is the SI unit of acceleration?
a. m/s                                            c. m/s
b. m /s                                           d. ms

.Which of the following is a physical quantity that has a magnitude but no direction?
a. vector                                        c. resultant
b. scalar                                        d. frame of reference
Two students are standing on a fire escape, one twice as high as the other. Simultaneously, each drops a ball. If the first
ball strikes the ground at time t , when will the second ball strike the ground? (Disregard air resistance.
Assume a = g = 9.81 m/s .)
a. t = 4t                                       c. t =    t
b. t = 2t                                       d.
t = t

Which of the following is a physical quantity that has both magnitude and direction?
a. vector                                         c. resultant
b. scalar                                         d. frame of reference
Which of the following is the cause of an acceleration?
a. speed                                           c. force
b. inertia                                         d. velocity
What causes a moving object to change direction?
a. acceleration                         c. inertia
b. velocity                             d. force
Motion
DOK 2: These questions are designed to require students with a basic understanding of physics to
apply relationships in a contextual form

According to the graph above, during which interval is the cat at rest?
a. 0.0–5.0 s                                     c. 10.0–15.0 s
b. 5.0–10.0 s                                    d. 15.0–20.0 s
According to the graph above, during which interval does the cat have the greatest positive velocity?
a. 0.0–5.0 s                                    c. 10.0–15.0 s
b. 5.0–10.0 s                                   d. 15.0–20.0 s
What does the graph above illustrate about acceleration?
a. The acceleration varies.
b. The acceleration is zero.
c. The acceleration is constant.
d. The acceleration increases then becomes constant.
In the graph above, how does the acceleration at A compare with the acceleration at B?
a. The acceleration at A is positive and less than the acceleration at B.
b. The acceleration at B is positive and less than the acceleration at A.
c. The accelerations at A and B are each zero.
d. The accelerations at A and B cannot be determined.

In the figure above, which diagram represents the vector addition C = A + B?
a. I                                           c. III
b. II                                          d. IV
In the figure above, which diagram represents the vector subtraction C = A–B?
a. I                                           c. III
b. II                                          d. IV
Motion
DOK 3: These questions are designed to allow students an opportunity to apply concepts with
calculations. Students must be able to know the necessary relationships, apply appropriate problem
solving skills, and evaluate validity of derived answers

An ant on a picnic table travels 3.0  10 cm eastward, then 25 cm northward, and finally 15 cm westward. What is the
magnitude of the ant’s displacement relative to its original position?
a. 70 cm                                         c. 52 cm
b. 57 cm                                         d. 29 cm

Find the resultant of these two vectors: 2.00  10 units due east and 4.00  10 units 30.0 north of west.
a. 300 units, 29.8 north of west                c. 546 units, 59.3 north of west
b. 581 units, 20.1 north of east                d. 248 units, 53.9 north of west

The figure above shows the path of a ball tossed from a building. Air resistance is ignored.

At what point of the ball’s path shown in the figure above is the vertical component of the ball’s velocity zero?
a. A                                              c. C
b. B                                              d. D
In the figure above, the magnitude of the ball’s velocity is greatest at location
a. A.                                             c. C.
b. B.                                             d. D.
.In the figure above, at which point is the ball’s speed about equal to the speed at which it was tossed?
a. A                                              c. C
b. B                                              d. D
A track star in the long jump goes into the jump at 12 m/s and launches herself at 20.0° above the horizontal. What is the
magnitude of her horizontal displacement? (Assume no air resistance and that a = –g = –9.81 m/s .)
a. 4.6 m                                        c. 13 m
b. 9.2 m                                        d. 15 m

A jet moving at 500.0 km/h due east is in a region where the wind is moving at 120.0 km/h in a direction 30.00 north of
east. What is the speed of the aircraft relative to the ground?
a. 620.2 km/h                                       c. 588.7 km/h
b. 606.9 km/h                                       d. 511.3 km/h

Open Response Questions
Johnny Jumper is going attempting to jump a 70 m wide canyon. His car accelerates from rest 8
m/s/s. His ramp is set at 30o and is situated 50 m from his initial point.
What accelerations are will act upon Johnny the instant he leaves the ramp?
How long will Johnny be in flight?
Will Johnny be successful in his attempt? Provide verification

Survivors of a plane crash are located on a deserted island. The crew that has spotted them is
intending to drop supplies for the survivors while awaiting rescue. The search plane is flying at 80
km/h at an altitude of 5.4 km.
Draw and describe the path that the relief package will take.
Determine the time it will take the package to reach the survivors
At what distance away from the island should the crew release the package? (Assume it will
not destruct on impact)
Forces
DOK 1: These questions are selected to measure student’s recollection of basic principles in
physics. Most of these questions are designed to aid in student responses to later questions.

A newton is equivalent to which of the following quantities?
a. kg                                            c. kgm/s
b. kgm/s                                        d. kg(m/s)

The length of a force vector represents the
a. cause of the force.                           c. magnitude of the force.
b. direction of the force.                       d. type of force.
Which of the following is the tendency of an object to maintain its state of motion?
a. acceleration                                  c. force
b. inertia                                       d. velocity
In general, Fnet equals
a. Ff.                                          c. Fn.
b. Fg.                                          d. F.

According to Newton’s second law, when the same force is applied to two objects of different masses,
a. the object with greater mass will experience a great acceleration, and the object with less
mass will experience an even greater acceleration.
b. the object with greater mass will experience a smaller acceleration, and the object
with less mass will experience a greater acceleration.
c. the object with greater mass will experience a greater acceleration, and the object with less
mass will experience a smaller acceleration.
d. the object with greater mass will experience a small acceleration, and the object with less
mass will experience an even smaller acceleration.
Newton’s third law of motion involves the interactions of
a. one object and one force.                      c. two object and one force.
b. one object and two forces.                     d. two objects and two forces.
A measure of the quantity of matter is
a. density.                                       c. force.
b. weight.                                        d. mass.
What are the units of the coefficient of friction?
a. N                                             c. N
b. 1/N                                           d. The coefficient of friction has no units.
.A force does work on an object if a component of the force
a. is perpendicular to the displacement of the object.
b. is parallel to the displacement of the object.
c. perpendicular to the displacement of the object moves the object along a path that returns
the object to its starting position.
d. parallel to the displacement of the object moves the object along a path that returns the
object to its starting position.
What is the common formula for work? Assume that W is the work, F is a constant force, v is the change in velocity, and
d is the displacement.
a. W = Fv                                  c. W = Fd
b. W = Fd                                   d. W = F d
Forces
DOK 2: These questions are designed to require students with a basic understanding of physics to
apply relationships in a contextual form

The free-body diagram shown above represents a car being pulled by a towing cable. In the diagram, the 5800 N force is
a. the gravitational force acting on the car.
b. the backward force the road exerts on the car.
c. the upward force the road exerts on the car.
d. the force exerted by the towing cable on the car.

A late traveler rushes to catch a plane, pulling a suitcase with a force directed 30.0 above the horizontal. If the horizontal
component of the force on the suitcase is 60.6 N, what is the force exerted on the handle?
a. 53.0 N                                         c. 65.2 N
b. 70.0 N                                         d. 95.6 N

A waitperson carrying a tray with a platter on it tips the tray at an angle of 12 below the horizontal. If the gravitational
force on the platter is 5.0 N, what is the magnitude of the force parallel to the tray that tends to cause the
platter to slide down the tray? (Disregard friction.)
a. 0.42 N                                            c. 4.9 N
b. 1.0 N                                             d. 5.0 N
As an object falls toward Earth,
a. the object does not exert a force on Earth.
b. the object exerts a downward force on Earth.
c. Newton’s third law does not apply.
d. the upward acceleration of Earth is negligible because of its large mass.
A sculpture is suspended in equilibrium by two cables, one from a wall and the other from the ceiling of a museum
gallery. Cable 1 applies a horizontal force to the right of the sculpture and has a tension, F . Cable 2 applies
a force upward and to the left at an angle of 37.0 to the negative x-axis and has a tension, F . The
gravitational force on the sculpture is 5.00 10 N. What is F ?
a. 4440 N                                         c. 8310 N
b. 6640 N                                         d. 3340 N
A net force of 6.8 N accelerates a 31 kg scooter across a level parking lot. What is the magnitude of the scooter’s
acceleration?
a. 0.22 m/s                                      c. 3.2 m/s
b. 0.69 m/s                                      d. 4.6 m/s

.An airplane with a mass of 1.20  10 kg tows a glider with a mass of 0.60  10 kg. If the airplane propellers provide a
net forward thrust of 3.60  10 N, what is the acceleration of the glider? (Disregard friction.)
a. 2.00 m/s                                     c. 6.00 m/s
b. 3.00 m/s                                     d. 9.80 m/s
Forces
DOK 3: These questions are designed to allow students an opportunity to apply concepts with
calculations. Students must be able to know the necessary relationships, apply appropriate problem
solving skills, and evaluate validity of derived answers

.Two perpendicular forces, one of 45.0 N directed upward and the other of 60.0 N directed to the right, act simultaneously
on an object with a mass of 35.0 kg. What is the magnitude of the resultant acceleration of the object?
a. 2.14 m/s                                     c. 5.25 m/s
b. 3.00 m/s                                     d. 1.41 m/s

A hockey stick hits a puck on the ice. Identify an action-reaction pair in this situation.
a. The stick exerts a force on the puck; the puck exerts a force on the stick.
b. The stick exerts a force on the puck; the puck exerts a force on the ice.
c. The puck exerts a force on the stick; the stick exerts a force on the ice.
d. The stick exerts a force on the ice; the ice exerts a force on the puck.
As a basketball player starts to jump for a rebound, the player begins to move upward faster and faster until his shoes
leave the floor. At the moment the player begins to jump, the force of the floor on the shoes is
a. greater than the player’s weight.
b. equal in magnitude and opposite in direction to the player’s weight.
c. less than the player’s weight.
d. zero.

A book with a mass of 2.0 kg is held in equilibrium on a board with a slope of 60.0 by a horizontal force. What is the
normal force exerted on the book?
a. 39 N                                          c. 15 N
b. 61 N                                          d. 34 N
A crate is carried in a pickup truck traveling horizontally at 15.0 m/s. The truck applies the brakes for a distance of 28.7 m
while stopping with uniform acceleration. What is the coefficient of static friction between the crate and the
truck bed if the crate does not slide?
a. 0.400                                          c. 0.892
b. 0.365                                          d. 0.656

.An ice skater moving at 10.0 m/s coasts to a halt in 1.0  10 m on a smooth ice surface. What is the coefficient of
friction between the ice and the skates?
a. 0.025                                          c. 0.102
b. 0.051                                          d. 0.205

Open response
A 10 kg box is sliding at a constant rate down an inclined plane set at 30o.
Draw a free body diagram to represent the box
Represent the magnitude and direction of the forces acting on the box
Determine the coefficient of friction
Momentum
DOK 1: These questions are selected to measure student’s recollection of basic principles in
physics. Most of these questions are designed to aid in student responses to later questions.
.What are the SI units for momentum?
a. Nm                                           c. kgm/s
b. J                                             d. kgm/s

Which of the following equations can be used to directly calculate an object’s momentum, p?
a. p = mv                                        c. p = Ft
b.                                               d. p = Ft

A child with a mass of 23 kg rides a bike with a mass of 5.5 kg at a velocity of 4.5 m/s to the south. Compare the
momentum of the child with the momentum of the bike.
a. Both the child and the bike have the same momentum.
b. The bike has a greater momentum than the child.
c. The child has a greater momentum than the bike.
d. Neither the child nor the bike has momentum.
.Which of the following has the greatest momentum?
a. a tortoise with a mass of 275 kg moving at a velocity of 0.55 m/s
b. a hare with a mass of 2.7 kg moving at a velocity of 7.5 m/s
c. a turtle with a mass of 91 kg moving at a velocity of 1.4 m/s
d. a roadrunner with a mass of 1.8 kg moving at a velocity of 6.7 m/s
.A rubber ball moving at a speed of 5 m/s hit a flat wall and returned to the thrower at 5 m/s. The magnitude of the
momentum of the rubber ball
a. increased.                                     c. remained the same.
b. decreased.                                     d. was not conserved.
Which of the following equations can be used to directly calculate the change in an object’s momentum?
a. p = mv                                        c. p = Ft
b.                                               d. p = Ft

The change in an object’s momentum is equal to
a. the product of the mass of the object and the time interval.
b. the product of the force applied to the object and the time interval.
c. the time interval divided by the net external force.
d. the net external force divided by the time interval.
Momentum
DOK 2: These questions are designed to require students with a basic understanding of physics to
apply relationships in a contextual form
A ball with a momentum of 4.0 kgm/s hits a wall and bounces straight back without losing any kinetic energy. What is
the change in the ball’s momentum?
a. –8.0 kgm/s                               c. 0.0 kgm/s
b. –4.0 kgm/s                               d. 8.0 kgm/s

A 0.2 kg baseball is pitched with a velocity of 40 m/s and is then batted to the pitcher with a velocity of 60 m/s. What is
the magnitude of change in the ball’s momentum?
a. 2 kgm/s                                       c. 8 kgm/s
b. 4 kgm/s                                       d. 20 kgm/s

A 20 kg shopping cart moving at a velocity of 0.5 m/s collides with a store wall and stops. The momentum of the
shopping cart
a. increases.                                    c. remains the same.
b. decreases.                                    d. is conserved.
In a two-body collision,
a. momentum is always conserved.
b. kinetic energy is always conserved.
c. neither momentum nor kinetic energy is conserved.
d. both momentum and kinetic energy are always conserved.
The law of conservation of momentum states that
a. the total initial momentum of all objects interacting with one another usually equals the
total final momentum.
b. the total initial momentum of all objects interacting with one another does not equal the
total final momentum.
c. the total momentum of all objects interacting with one another is zero.
d. the total momentum of all objects interacting with one another remains constant
regardless of the nature of the forces between the objects.
Which of the following statements about the conservation of momentum is not correct?
a. Momentum is conserved for a system of objects pushing away from each other.
b. Momentum is not conserved for a system of objects in a head-on collision.
c. Momentum is conserved when two or more interacting objects push away from each other.
d. The total momentum of a system of interacting objects remains constant regardless of
forces between the objects.
Two objects stick together and move with a common velocity after colliding. Identify the type of collision.
a. elastic                                    c. inelastic
b. nearly elastic                             d. perfectly inelastic
Two billiard balls collide. Identify the type of collision.
a. elastic                                        c. inelastic
b. nearly elastic                                 d. perfectly inelastic
A billiard ball collides with a stationary identical billiard ball in an elastic head-on collision. After the collision, which of
the following is true of the first ball?
a. It maintains its initial velocity.               c. It comes to rest.
b. It has one-half its initial velocity.            d. It moves in the opposite direction.
A billiard ball collides with a second identical ball in an elastic head-on collision. What is the kinetic energy of the system
after the collision compared with the kinetic energy before the collision?
a. unchanged                                       c. two times as great
b. one-fourth as great                             d. four times as great

Open response
To measure the speed of a bullet, the following situation is set up. A wooden block (m=0.50kg) is
put on top of a fencepost with a height of 1.5m. The bullet (m=.010kg) strikes the block from a
perfectly horizontal direction and remains embedded in it. The block is measured to fall 1.6m from
the base of the post. How fast was the bullet going?

A 10g bullet is fired horizontally into a 300g wooden block initially at rest on a horizontal surface
and becomes embedded in it. The coefficient of friction between block and surface is (0.50). The
combined system slides 4.0m before stopping. With what speed did the bullet strike the block?
Energy
DOK 1: These questions are selected to measure student’s recollection of basic principles in
physics. Most of these questions are designed to aid in student responses to later questions.
Work is done when
a. the displacement is not zero.
b. the displacement is zero.
c. the force is zero.
d. the force and displacement are perpendicular.
In which of the following scenarios is no net work done?
a. A car accelerates down a hill.
b. A car travels at constant speed on a flat road.
c. A car decelerates on a flat road.
d. A car decelerates as it travels up a hill.
.A worker does 25 J of work lifting a bucket, then sets the bucket back down in the same place. What is the total net work
done on the bucket?
a. –25 J                                          c. 25 J
b. 0 J                                            d. 50 J
.A construction worker pushes a wheelbarrow 5.0 m with a horizontal force of 50.0 N. How much work is done by the
worker on the wheelbarrow?
a. 10 J                                       c. 250 J
b. 55 J                                       d. 1250 J
A horizontal force of 200 N is applied to move a 55 kg television set across a 10 m level surface. What is the work done
by the 200 N force on the television set?
a. 550 J                                        c. 6000 J
b. 2000 J                                       d. 11000 J
Which of the following energy forms is associated with an object in motion?
a. potential energy                             c. nonmechanical energy
b. elastic potential energy                     d. kinetic energy
Which of the following energy forms is associated with an object due to its position?
a. potential energy                             c. total energy
b. positional energy                            d. kinetic energy
Which of the following formulas would be used to directly calculate the kinetic energy of an object with mass m bouncing
up and down on a spring with spring constant k?
a.                                              c.
b.                                              d.
Energy
DOK 2: These questions are designed to require students with a basic understanding of physics to
apply relationships in a contextual form
.What is the kinetic energy of a 0.135 kg baseball thrown at 40.0 m/s?
a. 54.0 J                                        c. 108 J
b. 87.0 J                                        d. 216 J
The main difference between kinetic energy and potential energy is that
a. kinetic energy involves position, and potential energy involves motion.
b. kinetic energy involves motion, and potential energy involves position.
c. although both energies involve motion, only kinetic energy involves position.
d. although both energies involve position, only potential energy involves motion.
Gravitational potential energy is always measured in relation to
a. kinetic energy.                               c. total potential energy.
b. mechanical energy.                            d. a zero level.
The equation for determining gravitational potential energy is PE = mgh. Which factor(s) in this equation is (are) not
intrinsic to an object?
a. m                                              c. h
b. g                                              d. both g and h
What is the potential energy of a 1.0 kg mass 1.0 m above the ground?
a. 1.0 J                                        c. 10 J
b. 9.8 J                                        d. 96 J
Friction converts kinetic energy to
a. mechanical energy.                            c. nonmechanical energy.
b. potential energy.                             d. total energy.
A 3.00 kg toy falls from a height of 1.00 m. What will the kinetic energy of the toy be just before the toy hits the ground?
(Assume no air resistance and that g = 9.81 m/s .)
a. 0.98 J                                        c. 29.4 J
b. 9.8 J                                         d. 294 J
Which of the following is the rate at which work is done?
a. potential energy                               c. mechanical energy
b. kinetic energy                                 d. power
Which of the following equations is not an equation for power, P, in terms of work, W, displacement, d, time interval, t,
force, F, and/or velocity, v?
a.                                              c.

b.                                               d.

.How much power is required to lift a 2.0 kg mass at a speed of 2.0 m/s?
a. 2.0 J                                          c. 9.8 J
b. 4.0 J                                          d. 39 J
Open Response
A person pushes a stalled 2000 kg car from rest to a speed , doing 4000 J of work in the process.
During this time the car moves 20 m. Neglecting friction between the car and the road, find:
a.
the final speed   of the car
b.
the horizontal force exerted on the car

An elevator m=800kg has a maximum load of 8 people or 600kg. The elevator goes up 10 stories =
30m at a constant speed of 4m/s. What is the average power output of the elevator motor if the
elevator is fully loaded with its maximum weight? (neglect friction)
Heat
DOK 2: These questions are designed to require students with a basic understanding of physics to
apply relationships in a contextual form
Which of the following is a direct cause of a substance’s temperature increase?
a. Energy is removed from the particles of the substance.
b. Kinetic energy is added to the particles of the substance.
c. The number of atoms and molecules in a substance changes.
d. The volume of the substance decreases.
Which of the following is proportional to the kinetic energy of atoms and molecules?
a. elastic energy                                 c. potential energy
b. temperature                                    d. thermal equilibrium
As the temperature of a substance increases, its volume tends to increase due to
a. thermal equilibrium.                          c. thermal expansion.
b. thermal energy.                               d. thermal contraction.
What is the temperature of a system in thermal equilibrium with another system made up of water and steam at 1 atm of
pressure?
a. 0°F                                         c. 0 K
b. 273 K                                       d. 100C

If two small beakers of water, one at 70C and one at 80C, are emptied into a large beaker, what is the final temperature
of the water?
a. The final temperature is less than 70C.
b. The final temperature is greater than 80C.
c. The final temperature is between 70C and 80C.
d. The water temperature will fluctuate.
What temperature has the same numerical value on both the Fahrenheit and the Celsius scales?
a. –40.0                                      c. 40.0
b. 0                                          d. –72.0

Energy transferred as heat occurs between two bodies in thermal contact when they differ in which of the following
properties?
a. mass                                        c. density
b. specific heat                               d. temperature
Which of the following terms describes a transfer of energy?
a. heat                                          c. temperature
b. internal energy                               d. kinetic energy
How is energy transferred as heat always directed?
a. from an object at low temperature to an object at high temperature
b. from an object at high temperature to an object at low temperature
c. from an object at low kinetic energy to an object at high kinetic energy
d. from an object with higher mass to an object of lower mass
Which of the following is true during a phase change?
a. Temperature increases.                        c. Temperature decreases.
b. Temperature remains constant.                 d. There is no transfer of energy as heat.
Open response
A beaker contains ice at –10o C as shown on a thermometer and is placed over a Bunsen burner.
 Describe what will happen to the contents of the beaker. Include a discussion of phase
change.
 Draw and label a phase change diagram for the situation
 The volume of the water liquid is found to be 500ml. How much energy is required to move
the water through the liquid phase?
Gravity
DOK 2: These questions are designed to require students with a basic understanding of physics to
apply relationships in a contextual form

.Why does an astronaut weigh less on the moon than on Earth?
a. The astronaut has less mass on the moon.
b. The astronaut is farther from Earth’s center when he or she is on the moon.
c. The gravitational field strength is less on the moon’s surface than on Earth’s surface.
d. The astronaut is continually in free fall because the moon orbits Earth.
Which of the following equations expresses Newton’s law of universal gravitation?
a.                                            c.

b.                                              d.

When calculating the gravitational force between two extended bodies, you should measure the distance
a. from the closest points on each body.
b. from the most distant points on each body.
c. from the center of each body.
d. from the center of one body to the closest point on the other body.
The gravitational force between two masses is 36 N. What is the gravitational force if the distance between them is
tripled? (G = 6.673  10 Nm /kg )
a. 4.0 N                                       c. 18 N
b. 9.0 N                                       d. 27 N
Two small masses that are 10.0 cm apart attract each other with a force of 10.0 N. When they are 5.0 cm apart, these
masses will attract each other with what force?
(G = 6.673  10 Nm /kg )
a. 5.0 N                                         c. 20.0 N
b. 2.5 N                                         d. 40.0 N
Open Response
What is the gravitational attraction force...
a. between the Sun and the Earth?
b. between the Moon and the Earth?
   mass of the Sun =1.987E30
   mass of the Earth = 5.975E24
   mass of the Moon = 7.35E22
   mean distance from the Sun to the Earth = 1.5E11
   mean distance from the Moon to the Earth = 3.85E8
Waves
DOK 2: These questions are designed to require students with a basic understanding of physics to
apply relationships in a contextual form
If a pendulum is adjusted so that its frequency changes from 10 Hz to 20 Hz, its period will change from n seconds to
a. n/4 seconds.                                 c. 2n seconds.
b. n/2 seconds.                                 d. 4n seconds.
Sound waves
a.    are a part of the electromagnetic spectrum.
b.    do not require a medium for transmission.
c.    are longitudinal waves.
d.    are transverse waves.
The trough of the sine curve used to represent a sound wave corresponds to
a. a compression.                                c. the amplitude.
b. the wavelength.                               d. a rarefaction.
The Doppler effect occurs with
a. only sound waves.                                c. only water waves.
b. only transverse waves.                           d. all waves.
In a vacuum, electromagnetic radiation of short wavelengths
a. travels as fast as radiation of long wavelengths.
b. travels slower than radiation of long wavelengths.
c. travels faster than radiation of long wavelengths.
d. can travel both faster and slower than radiation of long wavelengths.
The relationship between frequency, wavelength, and speed holds for light waves because
a. light travels slower in a vacuum than in air.
b. all forms of electromagnetic radiation travel at a single speed in a vacuum.
c. light travels in straight lines.
d. different forms of electromagnetic radiation travel at different speeds.
When red light is compared with violet light,
a. both have the same frequency.                   c. both travel at the same speed.
b. both have the same wavelength.                  d. red light travels faster than violet light.

What is the wavelength of microwaves of 3.0  10 Hz frequency?
a. 0.050 m                                  c. 0.10 m
b. 0.060 m                                  d. 0.20 m

What is the frequency of infrared light of 1.0  10   m wavelength?
a. 3.0 10 Hz                                  c. 3.0 10 Hz
b. 3.0 10 Hz                                  d. 3.0 10 Hz
Open Response
Compare and contrast longitudinal and transverse waves
 Draw and label a diagram of each
   Describe what would happen to each if the intensity of the waves is doubled

A microwave emits radiation with a frequency of 2.45 GHz.
 What is the wavelength
 Describe an experiment that would verify your calculation

Draw and label the electromagnetic spectrum
 Define relationships between frequency and energy
 Define relationships between wavelength and energy
 Apply these concepts in a discussion of incandescent light bulbs vs. fluorescent light bulbs
Electricity and Magnetism
DOK 1: These questions are selected to measure student’s recollection of basic principles in
physics. Most of these questions are designed to aid in student responses to later questions.
What happens when a rubber rod is rubbed with a piece of fur, giving it a negative charge?
a. Protons are removed from the rod.            c. Electrons are added to the fur.
b. Electrons are added to the rod.              d. The fur is left neutral.
A repelling force occurs between two charged objects when the charges are of
a. unlike signs.                              c. equal magnitude.
b. like signs.                                d. unequal magnitude.
An attracting force occurs between two charged objects when the charges are of
a. unlike signs.                              c. equal magnitude.
b. like signs.                                d. unequal magnitude.
Electric charge is
a. found only in a conductor.                    c. found only in insulators.
b. conserved.                                    d. not conserved.
Which of the following is not true for both gravitational and electric forces?
a. The inverse square distance law applies.
b. Forces are proportional to physical properties.
c. Potential energy is a function of distance of separation.
d. Forces are either attractive or repulsive.
.Which is the most correct statement regarding the drawing of electric field lines?
a. Electric field lines always connect from one charge to another.
b. Electric field lines always form closed loops.
c. Electric field lines can start on a charge of either polarity.
d. Electric field lines never cross each other.
Electric field strength depends on
a. charge and distance.                         c. Coulomb constant and mass.
b. charge and mass.                             d. elementary charge and radius.
When electrons move through a metal conductor,
a. they move in a straight line through the conductor.
b. they move in zigzag patterns because of repeated collisions with the vibrating metal
atoms.
c. the temperature of the conductor decreases.
d. they move at the speed of light in a vacuum.
Electricity and Magnetism
DOK 2: These questions are designed to require students with a basic understanding of physics to
apply relationships in a contextual form
Two point charges, initially 2 cm apart, are moved to a distance of 10 cm apart. By what factor does the resulting electric
force between them change?
a. 25                                             c.

b. 5                                              d.

If the charge is tripled for two identical charges maintained at a constant separation, the electric force between them will
be changed by what factor?
a.                                               c. 9

b.                                                d. 18

Where is the electric field of an isolated, uniformly charged, hollow metallic sphere greatest?
a. at the center of the sphere                    c. at infinity
b. at the sphere’s inner surface                  d. at the sphere’s outer surface
Where is the magnitude of the magnetic field around a permanent magnet greatest?
a. The magnitude is greatest close to the poles.
b. The magnitude is greatest far from the poles.
c. The magnitude is equal at all points on the field.
d. The magnitude is greatest halfway between poles.
In a magnetized substance, the domains
a. are randomly oriented.                         c. line up mainly in one direction.
b. cancel each other.                             d. can never be reoriented.
In a permanent magnet,
a. domain alignment persists after the external magnetic field is removed.
b. domain alignment becomes random after the external magnetic field is removed.
c. domains are always randomly oriented.
d. the magnetic fields of the domains cancel each other.
According to the right-hand rule, if a current-carrying wire is grasped in the right hand with the thumb in the direction of
the current, the four fingers will curl in the direction of
a. the magnetic force,             .                c. the current’s velocity, .
b. the magnetic field, .                          d. the current’s path, .
The direction of the force on a current-carrying wire in an external magnetic field is
a. perpendicular to the current only.
b. perpendicular to the magnetic field only.
c. perpendicular to both the current and the magnetic field.
d. parallel to the current and to the magnetic field.
What is the path of an electron moving parallel to a uniform magnetic field?
a. straight line                                 c. ellipse
b. circle                                        d. parabola
A current can be induced in a closed circuit without the use of a battery or an electrical power supply by moving the
circuit through a
a. high temperature field.                       c. magnetic field.
b. gravitational field.                          d. nuclear field.
All of the following are ways to induce an emf in a loop of wire except which one?
a. Move the loop into or out of a magnetic field.
b. Rotate the loop in a magnetic field.
c. Move the loop parallel to a magnetic field.
d. Insert the loop into a changing magnetic field.
Which of the following options can be used to generate electricity?
a. Move the circuit loop into and out of a magnetic field.
b. Change the magnetic field strength around the circuit loop.
c. Change the orientation of the circuit loop with respect to the magnetic field.
d. all of the above
A generator with a single loop produces the greatest magnetic force on the charges and the greatest induced emf when
a. the plane of the loop is parallel to the magnetic field.
b. half of the loop segments are moving perpendicular to the magnetic field.
c. the plane of the loop is perpendicular to the magnetic field.
d. none of the above
How is a motor’s mechanical energy able to perform mechanical work?
a. Mechanical energy is converted into electrical energy.
b. A current is generated by a rotating loop in a magnetic field.
c. Electrical energy is converted into a magnetic force.
d. A shaft connected to the rotating coil is attached to some external device.
.Which conversion process is the basic function of the electric generator?
a. mechanical energy to electrical energy c. low emf to high emf, or vice versa
b. electrical energy to mechanical energy         d. alternating current to direct current
Which conversion process is the basic function of the electric motor?
a. mechanical energy to electrical energy          c. low emf to high emf, or vice versa
b. electrical energy to mechanical energy d. alternating current to direct current
Electricity and Magnetism
DOK 3: These questions are designed to allow students an opportunity to apply concepts with
calculations. Students must be able to know the necessary relationships, apply appropriate problem
solving skills, and evaluate validity of derived answers

What is the potential difference across a 5.0 resistor that carries a current of 5.0 A?
a. 1.0  10 V                                      c. 10.0 V
b. 25 V                                            d. 1.0 V

A flashlight bulb with a potential difference of 4.5 V across it has a resistance of 8.0 . How much current is in the bulb
filament?
a. 36 A                                          c. 1.8 A
b. 9.4 A                                         d. 0.56 A
When compared in a given time interval with other lightbulbs connected to a 120 V circuit, a 60 W lightbulb
a. converts the same electrical energy to heat and light as a 40 W lightbulb.
b. converts more electrical energy to heat and light than a 100 W lightbulb.
c. converts less electrical energy to heat and light than a 40 W lightbulb.
d. converts less electrical energy to heat and light than a 100 W lightbulb.
If a 75 W lightbulb operates at a voltage of 120 V, what is the current in the bulb?
a. 0.62 A                                        c. 1.95  10 A
b. 1.6 A                                         d. 9.0  10 A

If a 325 W heater has a current of 6.0 A, what is the resistance of the heating element?
a. 88                                           c. 9.0 
b. 54                                           d. 4.5 

.A color TV draws about 2.5 A when it is connected to a 120 V outlet. Assuming electrical energy costs \$0.060 per kWh,
what is the cost of running the TV for exactly 8 h?
a. \$0.014                                        c. \$0.14
b. \$0.03                                         d. \$0.30

A microwave draws 5.0 A when it is connected to a 120 V outlet. If electrical energy costs \$0.090 per kWh, what is the
cost of running the microwave for exactly 6 h?
a. \$2.70                                       c. \$0.72
b. \$1.60                                       d. \$0.32
A circuit has a continuous path through which charge can flow from a voltage source to a device that uses electrical
energy. What is the name of this type of circuit?
a. a short circuit                               c. an open circuit
b. a closed circuit                              d. a circuit schematic

Three resistors with values of 4.0 , 6.0 , and 8.0 , respectively, are connected in series. What is their equivalent
resistance?
a. 18                                          c. 6.0 
b. 8.0                                         d. 1.8 
Three resistors connected in series carry currents labeled I , I , and I , respectively. Which of the following expresses the
total current, I , in the system made up of the three resistors in series?
a. It = I1 + I2 + I3                               c. It = I1 = I2 = I3
b.                                                 d.
It =                                               It =

Three resistors with values of R , R , and R are connected in series. Which of the following expresses the total
resistance, R , of the three resistors?
a. Req = R1 + R2 + R3                          c. Req = R1 = R2 = R3
b.                                             d.
Req =                                          Req =

A circuit is composed of resistors wired in series. What is the relationship between the equivalent resistance of the circuit
and the resistance of the individual resistors?
a. The equivalent resistance is equal to the largest resistance in the circuit.
b. The equivalent resistance is greater than the sum of all the resistances in the circuit.
c. The equivalent resistance is equal to the sum of the individual resistances.
d. The equivalent resistance is less than the smallest resistance in the circuit.

Three resistors with values of 3.0 , 6.0 , and 12  are connected in series. What is the equivalent resistance of this
combination?
a. 0.58                                       c. 7.0 
b. 1.7                                        d. 21 

Three resistors with values of 4.0 , 6.0 , and 10.0  are connected in parallel. What is their equivalent resistance?
a. 20.0                                        c. 6.0 
b. 7.3                                         d. 1.9 

What is the equivalent resistance of the resistors in the figure shown above?
a. 7.5                                           c. 16 
b. 10                                            d. 18 
What is the equivalent resistance for the resistors in the figure shown above?
a. 25                                            c. 7.5 
b. 10.0                                          d. 5.0 

Open Response

Our Earth would be very different if we no longer had a magnetic field surrounding it.
 Draw and label a diagram of the Earth’s Magnetic Field
 Describe how the Earth’s Magnetic Field protects us
 Describe how the Earth’s Magnetic Field contributes the aurora borealis

Use the two circuits shown to fill in the table below.

Total resistance:                      Total resistance:

For each
circuit element           A                  B                  C         D              E
find:
current
voltage drop
power
Compare and contrast the two circuits above
Other Science
DOK 2: These questions are designed to require students with a basic understanding of physics to
apply relationships in a contextual form

What is the concentration of positive charge and mass in Rutherford’s atomic model called?
a. alpha particle                              c. proton
b. neutron                                     d. nucleus
Which statement about emission spectra is correct?
a. All of the lines are evenly spaced.
b. All noble gases have the same spectra.
c. Each line corresponds to a series of wavelengths.
d. All of the lines result from discrete energy differences.
Which of the following statements is true about emission spectra?
a. Emission spectra form dark lines on a continuous spectrum.
b. The wavelengths of the spectrum are characteristic of the element emitting the light.
c. The wavelengths of the spectrum are the same for all atomic gases.
d. The wavelengths of the spectrum are the same for all elements.
What causes the bright lines in the emission spectrum of an element to occur?
a. Photons are absorbed when electrons jump from a higher-energy to a lower-energy state.
b. Photons are emitted when electrons jump from a higher-energy to a lower-energy
state.
c. Photons are absorbed when electrons jump from a lower-energy to a higher-energy state.
d. Photons are emitted when electrons jump from a lower-energy to a higher-energy state.
What causes the dark lines in the absorption spectrum of an element to occur?
a. Photons are absorbed when electrons jump from a higher-energy to a lower-energy state.
b. Photons are emitted when electrons jump from a higher-energy to a lower-energy state.
c. Photons are absorbed when electrons jump from a lower-energy to a higher-energy
state.
d. Photons are emitted when electrons jump from a lower-energy to a higher-energy state.

What is the frequency of a photon with an energy of 1.99  10 J?
(h = 6.63  10 Js)
a. 1.00  10 Hz                                c. 3.00  10   Hz
b. 2.00  10 Hz                                d. 4.00  10   Hz

What is the energy of a photon whose frequency is 6.0  10 Hz?
(h = 6.63  10 Js; 1 eV = 1.60  10 J)
a. 1.6 MeV                                    c. 3.3 MeV
b. 2.5 MeV                                    d. 4.8 MeV
Sources
http://econnect.frankfort.k12.ky.us/aperry/

http://zebu.uoregon.edu/~probs/probm.html

Zitzewitz, Paul W. Glencoe Physics The Physical Setting. Columbus Ohio, Glencoe-McGraw
Hill; 1999

Conceptual Physics International Edition 10th Edition Paul Hewitt Aug 2005

Holt Physics by Raymond A. Serway (Author), Jerry S. Faughn (Author)

http://www.jburroughs.org/science/mschober/circuits/practice.htm

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