| A | B |
|---|
| geology | The study of the earths physical stuctures |
| crust | outer most layer of the earth |
| % of water on earth | 70% |
| island | a piece of land completly surrounded by water |
| isthmus | A narrow strip of land having water on each side and joining two larger bodies of land |
| delta | the end of a river |
| lake | boby of enclosed water |
| magma | lava before it hits the surface |
| faults | a fracture or break in the earths crust |
| continental drift theory | the theory thatthe continents are coninually drifting |
| convection | the movement of the plates |
| converging | when to plates colide |
| core | the earths center |
| continents | any of the seven large landmasses of the earths surface |
| archipelago | a group of islands |
| peninsula | a strip of land that juts out into an ocean |
| gulf | semi enclosed body of saly water |
| butte | elevated piece of land |
| lava | magma once it hits the surface |
| plate tectonics | The pates that make up the crust of the earth |
| sea floor spreading | The theory that the sea floor is continually growing |
| spreading | continents moving away from each other |
| faulting | when two plates rub against each other |
| sound | a narrow body of water |
