Earth Science MCQ Questions and Answers Quiz

11. The solidified lava of a volcano belongs to which rock family? Is it:

  1. igneous
  2. metamorphic
  3. sedimentary
  4. fossilized

12. The tanning rays of the sun are called:

  1. infrared rays
  2. visible light
  3. ultraviolet rays
  4. gamma rays

13. What is the relative humidity when the absolute humidity is 3 grams per cubic meter and the air has a capacity of 12 grams per cubic meter?

  1. 4%
  2. 9%
  3. 25%
  4. 400%

14. What percentage of the earths atmosphere does O2 comprise?

  1. 75%
  2. 50%
  3. 21%
  4. 32%

15. Which of the following energy sources does NOT originally come from the Sun?

  1. wind
  2. Ocean thermal energy conversion
  3. geothermal
  4. hydroelectric

16. Which of the following gases is given off in the acid test of a carbonate mineral?

  1. chlorine
  2. nitrogen
  3. carbon dioxide
  4. sulfur dioxide

17. Which of the following minerals is NOT a silicate?

  1. orthoclase
  2. muscovite
  3. augite (pron: aw-jIt)
  4. magnetite

18. Which of the following minerals is noted for its one perfect cleavage?

  1. calcite
  2. muscovite
  3. quartz
  4. pyrite

19. Which of the following terms is used to describe the appearance of a mineral in transmitted light? Is it:

  1. diaphaneity (pron: die-ah-fah-na-ah-tee)
  2. translucence
  3. opaqueness
  4. porosity

20. Which one of the following minerals does NOT contain silica tetrahedrons?

  1. quartz
  2. muscovite
  3. halite
  4. orthoclase

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