Unit 3 Review Questions
- Which layer of the Earth makes up most of Earth’s mass?
- crustc. mantle
- Inner cored. outer core
2. Earth’s tectonic plates sit atop and slide along which of these layers?
a. lithosphere c. asthenosphere
b. atmosphered. core
3. Put the layers of the Earth in order from least to most pressure.
4. What keeps the inner core solid, even though the temperature is very high?
a. high pressure c. low pressure
b. high densityd. low density
5. Which of these have the greatest effect on plate tectonics?
a. density and convection c. size and convection
b. density and compositiond. temperature and composition
6. List the three types of tectonic plates and describe the motion associated with each one.
7. What type of plate movement is featured in this picture? How does it move?
8. What type of landforms might result in this type of tectonic plate movement?
9. Sea-floor spreading occurs at what type of tectonic plate boundary?
10. When two plates converge, one plate is usually forced to slide under the other. Oceanic plates are more dense than continental plates. If an oceanic plate collides with a continental plate, what will be the likely result?
11. Explain why the lithosphere floats on the asthenosphere.
12. List the 4 pieces of evidence Wegener used for continental drift and explain each one.
13. Transform plate boundary movement causes ______
14. A break or crack in Earth’s crust is called a ______.
15. What type of landform results from convergent plate boundary movement? ______
16. What type of plate boundary movement would be associated with compression?
______
17. What causes the tectonic plates to move?
18. List the three types of lithospheric plate movement.
19. Which layer of the Earth consists mostly of iron and nickel?
a. inner coreb. outer core
c. mantled. crust
20. How do densities and temperatures of the Earth’s layers compare?
- The density and temperature increases as you move from the surface inside
- The density increases while temperature decreases as you move from the surface inside
- The density and temperature decreases as you move from the surface inside
- The density decreases while the temperature increases as you move from the surface inside