Download The Structure of the Earth Name: Date: After reading the present

The Structure of the Earth
Name: __________________________________________
Date: ________________
After reading the presentation, "The Structure of the Earth,"
http://curriculum.calstatela.edu/courses/builders/lessons/less/les2/earth.html
write the answers to the follow questions:
1. What caused gravitational forces on the forming planets to increase?
2. As the atoms, of which the planets are composed, were drawn strongly together; what
happened to the planet's centers?
3. In turn, what happened to the centers of planets that were large enough?
4. What happened to the heavy elements of which the Earth was composed?
5. What eventually happened to the surfaces of the inner planets?
6. What do scientists study to learn about the Earth's interior?
7. What are the four main layers of the Earth's interior--from the center out?
8. Of what is the Earth's inner core mostly composed?
9. Why is it a solid, rather than a liquid?
10. Of what is the Earth's outer core mostly composed?
11. In what state; solid, liquid, or gas; is this layer?
12. What do currents in this layer create?
13. Of what is the mantle composed?
14. How much of the Earth is contained in the mantle?
15. Describe the consistency of the rocks in this layer.
16. On what layer of the Earth do we live?
17. What supports this layer?
18. This layer is broken into smaller pieces. What are these pieces called?
19. How many main ones are there?
20. What causes them to move around?