Earth’s Interior and Plate Tectonics

Honors Physical Science

1. You are responsible for the following terms: crust, mantle, core, lithosphere, asthenosphere, plate tectonics, magma, lava, subduction, fault, Mohorivičić discontinuity (Moho), convergent boundary, divergent boundary, convection, magnetic stratigraphy, paleomagnetism.

2. Draw a cross-section diagram of the Earth. Include and label all of the following features: inner core, outer core, mantle, asthenosphere, lithosphere, Mohorivičić discontinuity (Moho), oceanic crust, continental crust. For the different layers indicate the thickness and temperature for each.

3. Intense pressure is one reason for the high temperature in the core. What is another major factor?

4. When and by who was plate tectonic theory first proposed?

5. List and describe the strength of four pieces of evidence that support plate tectonic theory. (both resources)

6. Use the maps provided to describe fossil and glacial evidence for plate tectonic theory.

7. How is Earth’s magnetic field produced? (ESH p. 158-159)

8. How is the orientation of iron bearing rocks affected by the Earth’s magnetic field? (ESH p158-159)

9. What magnetic striping (paleomagnetic banding)? How is it used to support plate tectonic theory? (both; ESH p. 219-220)

10. What is convection? How can convection explain crustal plate motion?

11. What are the three forces thought to move the crustal plates? (both; ESH p. 226)

12. Distinguish between divergent and convergent plate boundaries.

13. Describe why volcanoes can be present at both convergent and divergent plate boundaries. (both; ESH p. 18)

14. Describe what happens at a divergent boundary. Include the terms rift valley and mid-ocean ridge in the discussion.

15. Describe what happens at a convergent boundary between continental crust and oceanic crust. Use the following terms: subduction, trench, volcano, earthquake, mountains, melting.

16. Describe what happens at a convergent boundary between continental crust and continental crust. Use the following terms: subduction, volcano, earthquake, mountains, melting.

17. Describe a transform fault. Give an example of a transform fault in continental crust and in oceanic crust.

18. Section Review questions 1, 2, 3, 4, 6, 7 on page 566.