1. This is the mostly solid layer of Earth that is highly viscous.

• Crust
• Mantle
• Inner Core
• Outer Core

2. ____________ is an underwater mountain chain that encircles the globe.

• Trench
• Mid-ocean ridge
• Rift
• Subduction

3. ________________ is the outer-most layer of Earth.

• Inner core
• Outer core
• Crust
• Mantle

4. ________________ exist at the mid-ocean ridges where slabs of oceanic crust are separating and creating cracks.

• Trenches
• Rifts
• Faults
• Subduction

5. ___________________ is the downward movement of a plate into the mantle.

• Plate tectonics
• Divergent
• Sea-floor spreading
• Subduction

6. ____________________ are deep depressions on the sea floor.

• Rifts
• Trenches
• Faults
• Mid-ocean ridges

7. Compare and contrast the type of rock that make up the oceanic and continental crust.

• The oceanic crust is made up of granite rock and the continental crust is made up of basalt rock. Granite is denser than basalt.
• The oceanic crust is made up of basalt rock and the continental crust is made up of granite rock. Granite is denser than basalt.
• The oceanic crust is made up of granite rock and the continental crust is made up of basalt rock. Basalt is denser than granite.
• The oceanic crust is made up of basalt rock and the continental crust is made up of granite rock. Basalt is denser than granite.

8. True or false: The orientation of Earth's magnetic field has reversed over it's history.

• True
• False

9. The name of Alfred Wagner’s supercontinent was named ______________ and the name of the super ocean was _______________.

• Pangea, Panthalassa
• Panthalassa, Pangea
• Uniworld, Uniocean

10. What is the difference between the inner and outer core?

• The outer core is liquid and the inner core is solid.
• The inner core is solid and the outer core is liquid.
• The outer core is the outer-most layer of Earth and the inner core is the center of Earth.
• The inner core is mostly solid but highly viscous. The outer core is completely solid.