1. Forces Below Plate Tectonics:
Theory that explains how forces within the planet create landforms.
Plates move along the upper mantle.
The process by which this takes place is usually referred to as continental drift.

5. Earth’s Crust Two Types of Crust:
Oceanic Crust
Continental Crust
Oceanic Crust is thinner and more dense than continental crust. It is also more active.

6. Earthquakes
Caused by separation, colliding, subduction or transformation of plates
Most occur along fault lines
Earthquakes can cause tsunami’s or giant waves that can travel across the ocean and cause loss of life and property to many people

7. Volcanoes
Hot magma, gases and water pour out of an opening in the earth's crust, usually on a plate boundary.
Most well known islands formed by volcano eruption is the Hawaiian Islands

9. Mountains
Folding
Rocky Mountains were formed by folding.

12. Mountains
Faulting
Sierra Nevadas

13. Sierra Crest

14. Sierra Nevadas

15. The Hydrosphere What is it? Important terms:
Desalinization, headwaters, tributary, watershed (drainage basin), wetlands, water table