Earth Formation, Structure and Minerals 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 "distinctive composition"?
  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 Earth 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 and rock.

  3. An aggregate of two or more minerals is called a ______________ .
  4. Circle the physical property that is not one of the properties of minerals we study:   color,   streak,   solubility,   density,   luster,   cleavage,   fracture,   crystal form.
  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 we use to identify minerals.

  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. ______________. Explain your choice:
  16. Which has a greater specific gravity: Mineral 3 or mineral 4? ______________
  17. Describe the streak of mineral 5. ______________