| A | B |
|---|
| Geology | The study of the earths physical structure and history |
| Crust | the solid rocky surface layer of the earth |
| % of water on earth | 70 percent |
| island | piece of land surrounded by water |
| isthmus | a narrow strip of land having water on each side and joining two larger bodies of land |
| delta | t |
| lake | t |
| magma | t |
| faults | a fracture or break in the earths crust |
| continental drift theory | the idea that continents slowly shift their positions due to movement of the tectonic plates on which they ride |
| convection | t |
| converging | t |
| core | the earths center consisting of very hot metal that is dense and solid in the inner core and molten or liquid in the outer core. |
| continents | any of the seven large landmasses of the earths surface:africa, antarctica, asia, australia, north america, south america, europe |
| major types of landforms | t |
| archipelago | a group islands |
| peninsula | a strip of land that juts out into an ocean |
| gulf | t |
| butte | t |
| lava | magma- or molten rock from the earths mantle that breaks through the surface of the earth during volcanic activity |
| plate tectonics | t |
