Origins Quiz Key A

Use your journal to answer these questions:

  1. The heavier elements of the solar system came from earlier super nova.
  2. How long ago did the solar system form? 4.6 bya
  3. What became of the material left over from the sun's formation? formed rest of solar system (planets and asteroids).
  4. What happened to a large portion of the Earth's crust after the collision with Theia? formed the moon
  5. What became of Theia's heavier elements? sank into and added to the Earth's core
  6. Describe three outcomes for the earth due to the collision with Theia. Changed Earth’s axis to produce the large 23.5° axial tilt, may also have sped up Earth’s rotation and initiated plate tectonics.
  7. In your earth model, how many grams of clay did you use for the mantle? 242 g
  8. Which layer of the Earth has the greatest volume? mantle
  9. Complete the table
    Earth layer Composition Phase
    Crust silicate minerals solid
    mantle Fe-Mg silicate minerals plastic (liquid-like)
    outer core Fe and other elements thick liquid
    inner core metals such as Fe and Ni solid
  10. On the back of this paper record your answer to Sept 12th's warm up. Draw Earth cross-section and label.