| A | B |
|---|
| geo | earth |
| ology | study of |
| geology | study of the earth's physical structure and history |
| mantle | thick layer of mostly solid rock beneath the eath's crust |
| crust | solid, rocky surface layer of the earth |
| continent | any of seven large landmasses of the earth's surface |
| lava | magma, or molten material that breaks through the surface of the earth during volcanic activity |
| fold | result of rock layers bending and buckling |
| fault | a fracture or break in the earth's crust |
| plate tectonics | the theory that the earth's outer shell is composed of large plates whose movement explains earthquake and volcanic activity |
| continent drift theory | continents shift their position because of shifts in the plates on which they ride |
| Ring of Fire | a circle of volcanic mountains surrounding the Pacific Ocean |
| core | The innermost part of the earth. |
| relief | Elevation or the height of landforms. |
