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					1. The diagram below shows a ball held in
  place by two blocks. The diameter (width)
  of the ball is shown between the two
  blocks. What is the diameter of the ball?

 (1) 6.0 cm
 (2) 8.0 cm
 (3) 14.0 cm
 (4) 17.0 cm
2. The diagram below shows milk being
  poured into a measuring cup. Which
  property of the milk can be directly
  measured using the cup?

 (1) mass
 (2) density
 (3) solubility
 (4) volume
3. A student wanted to study the amount of mold
   growing on pizza at different temperatures. In the
   experiment, the student set up four identical pans
   of pizza. The temperatures and light conditions are
   shown in the data table below. One error made in
   setting up the experiment was that the four pans of

(1) were at different temperatures
(2) were different sizes
(3) had different ingredients
(4) received different amounts of light
4. Cells are to tissues as tissues are to:

  (1) microbes
  (2) organs
  (3) systems
  (4) bacteria
5. Which sequence lists the levels of
  organization in the human body from
  simplest to most complex?

(1) organ system → tissue → cell → organ
(2) tissue → cell → organ → organ system
(3) organ → organ system → tissue → cell
(4) cell → tissue → organ → organ system
6. Tissue is composed of a group of:

 (1) similar cells working together
 (2) different organs working together
 (3) organ systems working together
 (4) nuclei in a cell working together
7. The kidneys, which remove dissolved
  wastes from the blood, are organs of the:

 (1) endocrine system
 (2) excretory system
 (3) skeletal system
 (4) nervous system
8. Which two systems of a rabbit’s body
  must be working together for the rabbit to
  run away from a fox?

 (1) digestive and endocrine
 (2) reproductive and nervous
 (3) muscular and skeletal
 (4) excretory and respiratory
9. In which process is oxygen used to
  release the energy stored in food?

 (1) photosynthesis
 (2) respiration
 (3) digestion
 (4) reproduction
10. When a person breathes, the lungs
  absorb oxygen, which is used by cells to
  carry out the process of:

 (1) respiration
 (2) secretion
 (3) photosynthesis
 (4) excretion
11. Running is an activity that causes the
  cells in the muscular system to use
  oxygen at a faster rate. Which system
  responds by delivering more oxygen to
  these cells?

 (1) digestive
 (2) nervous
 (3) circulatory
 (4) endocrine
12. Which body system is responsible for
  the elimination of liquid and gaseous

 (1) nervous
 (2) skeletal
 (3) excretory
 (4) digestive
13. What is the main function of the
  circulatory system?

 (1) secrete enzymes
 (2) digest proteins
 (3) produce hormones
 (4) transport materials
14. Infectious diseases are caused by:

 (1) allergies
 (2) vitamin deficiencies
 (3) chemical spills
 (4) microorganisms
15. The diagram below shows a part of a
  human body system. The possible
  movement represented by the arrows in
  the diagram is coordinated by the:

 (1) circulatory system
 (2) excretory system
 (3) nervous system
 (4) reproductive system
16. The diagram below represents a
  magnified view of an air sac in the human
  lung. The white arrows indicate blood flow.
  Which two systems are interacting in this

(1) skeletal and muscular
(2) nervous and endocrine
(3) reproductive and digestive
(4) respiratory and circulatory
17. What are two of the functions performed
   by this body system?

(1) protects and supports
    the body
(2) produces and transports
    oxygen within the body
(3) produces and excretes
    waste products
(4) controls and coordinates
    body activities
18. The main function of the human digestive
  system is to:

(1) break down foods for absorption into the
(2) exchange oxygen and carbon dioxide in
  the lungs
(3) release energy from sugars within the
(4) carry nutrients to all parts of the body
19. Which three systems of the human body
  function together to move and control body

(1) muscular, endocrine, and excretory
(2) nervous, skeletal, and muscular
(3) digestive, excretory, and reproductive
(4) circulatory, endocrine, and respiratory
20. The diagram below shows an
  experiment to test a certain property of
  liquids. Which property of the liquid is
  being tested?

 (1) density
 (2) magnetic attraction
 (3) conductivity
 (4) freezing point
21. The diagram below shows an incomplete
  circuit. Which item would allow the bulb to
  light up if it were used to connect point A
  to point B?

 (1) a glass rod
 (2) a metal coin
 (3) a plastic comb
 (4) a paper cup
22. Plastic is used to cover the copper wires
  in the power cords of appliances because
  plastic differs from copper in:

 (1) density
 (2) hardness
 (3) phase at room temperature
 (4) electrical conductivity
23. A wet shirt is put on a clothesline to dry
  on a sunny day. The shirt dries because
  water molecules:

  (1) gain heat energy and condense
  (2) gain heat energy and evaporate
  (3) lose heat energy and condense
  (4) lose heat energy and evaporate
24. The diagram below shows the steps
   necessary to produce the energy needed to
   run a hair dryer. As it moves from location A
   to location D in the diagram, the energy
   stored in the coal:

(1) is converted to solar
(2) reduces the friction
    in the hair dryer
(3) is recycled
(4) is transformed
25. The illustration below shows an example
   of energy changing forms. Which changes
   in energy form are illustrated in the

(1) electrical → sound → light and mechanical
(2) sound → mechanical → light and electrical
(3) mechanical → light → sound and electrical
(4) light → electrical → mechanical and sound
26. A television set changes electrical
  energy to sound and light energy. In this
  process, some energy is:

 (1) created
 (2) destroyed
 (3) changed to matter
 (4) changed to heat
27. Which energy resource is renewable?

 (1) fuel oil
 (2) natural gas
 (3) wind
 (4) coal
28. Which energy source is renewable?

 (1) oil
 (2) solar
 (3) coal
 (4) natural gas
29. Which energy source is considered a
  nonrenewable resource?

 (1) solar
 (2) wind
 (3) moving water
 (4) fossil fuel
30. Which factor contributes to global

 (1) increased use of solar-powered cars
 (2) increased burning of fossil fuels
 (3) better long-term weather forecasts
 (4) changing distance between Earth and
     the Sun
31. The pie chart below compares the
  amounts of energy from different sources
  used in the United States each year.
  Which two energy sources together
  provide more than 50% of the energy
  needs of the United States?

(1) nuclear and natural gas
(2) hydropower and oil
(3) oil and coal
(4) natural gas and coal
32. Magnets A and B are of equal magnetic
  strength. In which position will magnets A
  and B have the greatest attractive force
  toward each other?

33. Letters A, B, C, and D represent
  locations on a bar magnet. Which location
  has the greatest magnetic force?

 (1) A
 (2) B
 (3) C
 (4) D
34. Which equipment will best separate a
  mixture of iron filings and black pepper?

 (1) magnet
 (2) filter paper
 (3) triple-beam balance
 (4) voltmeter
35. Sand and iron particles that are similar in
  size and color are mixed together in a
  beaker. What would be the best method of
  separating the particles?

  (1) Use tweezers to separate them.
  (2) Use a magnet to separate them.
  (3) Add water to the mixture.
  (4) Pour the mixture into a filter.
36. The diagrams below show a
person moving a 50-kilogram
object up a ramp. In which
diagram is there the least
amount of friction on the
37. Which setup below
would require the
least force to lift a
100-gram mass a
distance of 10 cm?

38. The drawing below shows a person
  about to lift a book using a ruler and
  pencil. This drawing illustrates an example
  of which simple machine?

(1) gear
(2) pulley
(3) balance
(4) lever
39. The diagram below shows a stationary
  cart on a frictionless surface. If two unequal
  opposing forces are applied to the cart at
  the same time, what will occur?

  (1) The cart will move to the left.
  (2) The cart will move to the right.
  (3) The cart will alternate between moving
  left and right.
  (4) The cart will remain stationary.
40. The cartoon below shows a humorous view of a
  law of motion. Which statement best summarizes
  the scientific concept shown in the cartoon?

(1) A falling body accelerates at a constant speed.
(2) The motion of an object is constantly changing
  due to magnetic forces.
(3) The force of friction causes an object in motion
  to move faster.
(4) A body in motion will remain in motion unless
  influenced by an outside force.
41. The diagram below shows two dogs
  pulling on a rope with constant but
  unequal forces. In which compass
  direction will both dogs most likely move?

(1) east
(2) west
(3) north
(4) south
42. The illustration below shows a student
  approaching the door to a building. Which
  two simple machines are being used to
  enable the student to reach the door?

(1) inclined plane and pulley
(2) lever and wheel-and-axle
(3) pulley and lever
(4) wheel-and-axle and inclined plane
43. The wheels and gears of a machine are
  greased in order to decrease:

 (1) potential energy
 (2) efficiency
 (3) output
 (4) friction
44. The diagram below shows a boulder
  rolling down a hill into a valley and then up
  the opposite hill. At which position does
  the boulder have the greatest kinetic

     (1) A
     (2) B
     (3) C
     (4) D
45. Which two factors determine the
  gravitational attraction between two objects?

 (1) time and temperature
 (2) shape and orbital speed
 (3) color and hardness
 (4) mass and distance apart
46. The diagram below shows a tall beaker
  with four different liquids and their
  densities. If a ball that has a density of
  1.73 g/cm3 is placed in the beaker, where
  will the ball come to rest?

 (1) on top of liquid A
 (2) between liquids B and C
 (3) between liquids C and D
 (4) on the bottom of the beaker
47. Which graph below shows an object
  slowing down?

    (1)       (2)      (3)       (4)
48. The data table below shows the mass of an
  800-gram block of ice as it melts to a 600-
  gram block of ice. If the current rate of
  melting continues, how many more minutes
  will be required for the 600-gram block of ice
  to reach a mass of 400 grams?

     (1) 15
     (2) 30
     (3) 45
     (4) 60
49. Water vapor changes to liquid water
  during which process?

 (1) dissolving
 (2) melting
 (3) evaporation
 (4) condensation
50. A substance has a freezing point of
  –38°C and a boiling point of 356°C. At
  what temperature would this substance be
  in its liquid state?

 (1) –100°C
 (2) –50°C
 (3) 80°C
 (4) 375°C
51. Which graph best represents the relative
  distance between the particles of most
  substances in their solid, liquid, and gas

      (1)       (2)        (3)       (4)
52. The table below shows the chemical
  symbols for some common elements.
  Based on the information in the table,
  which of the four substances below is a

 (1) CO
 (2) He
 (3) Si
 (4) Fe
53. The tiny particles that make up all matter
  are called:

 (1) genes
 (2) atoms
 (3) minerals
 (4) cells
54. Which scientific model could be used to
  predict the properties of an element?

 (1) closed loop system
 (2) Punnett square
 (3) Periodic Table
 (4) water cycle chart
55. Which model is used by scientists to
  determine the properties of elements?

 (1) a Punnett square
 (2) the Periodic Table
 (3) a pedigree chart
 (4) the rock cycle
56. The diagram below shows the geometric
  structure of a molecule of water (H2O).
  What do the symbols       and represent
  in the model?

 (1) genetic material
 (2) chemical bonds
 (3) cells
 (4) atoms
57. The four diagrams below model the
  results of mixing atoms of different
  substances. Each atom is represented by
  a different symbol. Which diagram
  correctly models a chemical change?

58. Some common substances and their
   chemical formulas are listed in the chart
   below. Which of these substances are

(1) hydrochloric acid and
    carbonic acid
(2) carbon dioxide and
(3) oxygen and helium
(4) water and oxygen
59. The graph below shows the solubility of
   two different chemical compounds.
   Compared to copper sulfate,
   approximately how many more grams of
   potassium bromide would dissolve at

     (1) 20
     (2) 40
     (3) 60
     (4) 80
60. A chemical property of a mineral is
  evident if the mineral:

(1) breaks easily when struck with a hammer
(2) bubbles when acid is placed on it
(3) is easily scratched by a fingernail
(4) reflects light from its surface
61. Hydrochloric acid is added to a beaker
  containing a piece of zinc. As a result, zinc
  chloride is formed and hydrogen gas is
  released. This is an example of:

  (1) a chemical reaction
  (2) a physical change
  (3) photosynthesis
  (4) evaporation
62. Which action forms a different chemical

 (1) crushing a rock
 (2) burning a piece of wood
 (3) mixing salt and pepper
 (4) melting an ice cube

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