Practice Quiz

NAEP Science Grade 12 - Question List

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21. In the Doppler effect, light reaching the Earth from a distant galaxy in an expanding universe is shifted to
  1. longer wavelengths
  2. higher frequencies
  3. greater velocities
  4. greater amplitudes
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22. When sulfuric acid, H 2SO 4, is broken down into separate elements, how many different elements result?
  1. Two
  2. Three
  3. Six
  4. Seven
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23. Which of the following observations about a certain pure solid would indicate most strongly that the solid is ionic?
  1. Its water solution is a good conductor of electricity.
  2. It is composed of small white crystals.
  3. It has a density greater than 1.0 gram/cm 3.
  4. It has a high melting point.
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24. According to the theory of plate tectonics, the movement of plates can form mountain ranges and valleys. Within the next 100 million years, the Great Rift Valley in Africa will most likely become a
  1. folded mountain range
  2. flat eroded plain
  3. desert covered with lava
  4. wider and deeper valley
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25. When propane gas reacts with oxygen in the air to form carbon dioxide and water, heat is released. What is the source of this heat energy?
  1. The kinetic energy of the oxygen
  2. The kinetic energy of the propane
  3. The nuclear energy stored in the oxygen and propane
  4. The chemical energy stored in the oxygen and propane
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