# Physics Review

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```					More Review for Final Exam

Jeopardy
Round Two
Simple
Sound   Light   Optics   Electricity
Machines
100      100     100      100        100

200      200     200      200        200

300      300     300      300        300

400      400     400      400        400

500      500     500      500        500
Simple Machines 100
• Which simple machine is missing from the
list below?
–   lever
–   pulley
–   screw
–   wheel and axle
–   wedge
inclined plane
Simple Machines 200
•    How does a simple machine make work
easier?
a.   changes the size or direction of the force
b.   multiplies the work
c.   decreases the amount of time it takes
d.   reduces the distance you have to apply the
same amount of force
Simple Machines 300
•    The number of times a machine multiplies
a force is called
a.   efficiency
c.   work input
d.   work output
Simple Machines 400
• A mover pushes with 600 N of force to
move a heavy (90kg) couch up a ramp into
a moving truck, which is 2.5 meters above
the ground. The ramp itself is 4 meters
long.
– What is the ideal mechanical advantage of this
simple machine?
1.6
Simple Machines 500
• A mover pushes with 600 N of force to
move a heavy (90kg) couch up a ramp into
a moving truck, which is 2.5 meters above
the ground. The ramp itself is 4 meters
long.
– What is the efficiency of this simple machine?

92%
Sound 100
•    Speed of a sound wave depends on
a.   frequency
b.   wavelength
c.   medium
d.   velocity
Sound 200
•    Compared to a sound of 30 dB, a sound
of 70 dB is
a.   10 times louder
b.   40 times louder
c.   1,000 times louder
d.   10,000 times louder
Sound 300
•    Resonance occurs when
a. two slightly different frequencies are heard at
the same time.
b. an object is forced to vibrate at its natural
frequency.
c. amplitude increases.
d. speed of a sound increases when traveling
from one medium into another.
Sound/Light 400
•    What is an incandescent object?
a. Light can pass through it, but images are not
clear (like wax paper).
b. It can only reflect light, it does not allow light
to pass through it at all.
c. It can only be seen with a black light.
d. It emits light when it is heated.
Sound 500
•    A tuning fork with a frequency of 150 Hz
will resonate if a sound striking it has a
frequency of
a.   150 Hz or 300 Hz
b.   150 Hz only
c.   75 Hz or 150 Hz
d.   None of the above
Light 100
•    Adding red light and green light together
will make
a.   blue
b.   yellow
c.   cyan
d.   magenta
Light 200
•    What about a wave determines color?
a.   speed
b.   amplitude
c.   wavelength
d.   frequency
Light 300
•    Looking at a penny in a cup full of water,
the penny will appear
a.   darker in color than it actually is.
b.   lighter in color than it actually is.
c.   deeper than it actually is.
d.   shallower than it actually is.
Light 400
•    A person is wearing a yellow sweater…
on the negative of a picture of this person,
the sweater would be
a.   yellow
b.   magenta
c.   green
d.   blue
e.   cyan
Light 500
•    The critical angle for a transparent
material in air is 30°. The index of
refraction of the material is most nearly
a.   0.33
b.   0.50
c.   1.0
d.   1.5
e.   2.0
Optics 100
•    When one uses a magnifying glass to read
fine print, one uses a
a. Converging lens to produce a virtual image of
the print.
b. Converging lens to produce a real image of
the print.
c. Mirror to produce a virtual image of the print.
d. Diverging lens to produce a real image of the
print.
e. Diverging lens to produce a virtual image of
the print.
Optics 200
•    An object is placed as shown in the figure.
The center of curvature C and the focal
point F of the reflecting surface are
marked. As compared with the object, the
image formed by the reflecting surface is
a.   Upright and larger
b.   Upright and the same size
c.   Upright and smaller           C   F
d.   Inverted and larger
e.   Inverted and smaller
Optics 300
•    An object placed 3cm in front of a convex
mirror that has a 12 cm focal length will
produce an image that is
a.   upright, smaller, virtual
b.   upright, larger, virtual
c.   upright, smaller, real
d.   inverted, smaller, real
e.   inverted, larger, real
Optics 400
•   People who are farsighted will need to
wear which type of lens?
a. concave
b. convex
c. concave and convex
Optics 500
• A 5 cm tall candle is 15 cm in front of a
convex lens whose focal length is 20 cm.
– What is the height of the image?
– Is this a real or a virtual image?

20 cm, virtual
Electricity 100
•    Which type of particles exert forces?
a.   protons
b.   neutrons
c.   electrons
d.   both a) and b)
e.   both a) and c)
Electricity 200
•    What must be true in a circuit for
electricity to flow?
a.   It must be a parallel circuit.
b.   It must be a series circuit.
c.   It must be a closed circuit.
d.   It must be an open circuit.
Electricity 300
•    In what type of circuit do electrons have
more than one path to follow?
a.   AC
b.   DC
c.   Series
d.   Parallel
Electricity 400
• What is Ohm’s Law?

V = IR
Electricity 500
• If you plug a lamp, which has a resistance
of 20 Ω, into the wall, what is the current
flowing through the lamp?

6.0A
YIKES!!

http://www.coolquiz.com/trivia/explain/docs/images/electric.gif

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