Practice Quiz

NAEP Science Grade 8 - Question List

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16. Which of the following is designed to convert energy into mechanical work?
  1. Electric fan
  2. Kerosene heater
  3. Flashlight
  4. Baking oven
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17. Which of the following is most consistent with the modern theory of evolution?
  1. Parents pass their physical traits to their offspring; those offspring with traits that help them survive in the environment are able to reproduce.
  2. Parents change their physical traits in order to survive in the environment, then those parental traits are passed to their offspring.
  3. Life on this planet came from another planet far out in space.
  4. Living organisms have not changed for hundreds of millions of years.
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18. Kelly slides a flat rock across the smooth ice of a frozen pond. The rock slows down after several seconds. What causes the rock to slow down?
  1. The thickness of the ice
  2. The temperature of the air above the ice
  3. The force of friction between the ice and the rock
  4. The gravitational force between the ice and the rock
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19. Why do mountain climbers at high elevations use oxygen tanks to help them breathe?
  1. At high elevations the ozone layer draws oxygen out of the atmosphere.
  2. The atmosphere is less dense at higher elevations so there is less oxygen available.
  3. Oxygen is heavier than the other gases in the atmosphere and sinks to lower elevations.
  4. Radiation from the Sun splits oxygen molecules into atoms making the oxygen unbreathable.
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20. In your body, what two organs work together to make sure that oxygen gets to all the other organs of your body?
  1. Lungs and kidneys
  2. Heart and lungs
  3. Brain and kidneys
  4. Heart and liver
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