Earth Formation, Structure and Minerals Practice Test


  1. What is a nebula?
  2. What is a supernova?
  3. The heavy elements in the solar system originally came from ______ .
  4. How old is the solar system?
  5. What became of the solar nebula material left over from the sun's formation?
  6. What is the name of the planet that struck the Earth and caused the moon's formation?
  7. About what was Theia's size?
  8. How long ago did Theia hit the Earth?
  9. What are the three results of Theia's impact on Earth?
  10. The Earth had heavy elements as did Theia. What became of those heavy elements in the Earth/ Moon system after the collision?
  11. What force of nature is responsible for the formation of the solar system?

Earth Structure

  1. Your notes state that "Each layer of the Earth can be characterized by its distinctive composition and physical properties." Describe the physical properties.
  2. What is meant by composition properties?
  3. Which layer is capable of flow?
  4. Which layer is a solid sphere?
  5. If the inner core is hot enough to melt, why is it still a solid?
  6. What layer on the Earth is composed mostly of light elements?
  7. What is the composition of the inner core?
  8. Why did the elements of the separate into layers?
  9. Normalize this set of data: 5, 10, 25.


  1. What is a mineral? (Remember there are four parts to this)
  2. Compare and contrast mineral, rock and ore.
  3. An aggregate of two or more minerals is called a ____.
  4. What are the nine physical properties of minerals?
  5. The color of the powdered mineral is called its _____.
  6. The external form that a mineral has reflecting the orderly internal arrangement of its atoms is called _____.
  7. Describe three or more physical mineral properties.
  8. Why isn't color a reliable identifier of mineral?
  9. What determines the hardness of a mineral?
  10. Contrast color and streak.
  11. What color is sulfur?
  12. What could cause one piece of quartz to be milky colored and another to be pink?
  13. Name two tools used to test hardness.
  14. What is the luster of the mineral 1?
  15. Estimate the hardness of the mineral 2.
  16. Which has a greater specific gravity: Mineral 3 or mineral 4?
  17. Describe the streak of mineral 5.