| A | B |
|---|
| Geology | The study of how landforms are created |
| crust | thin, top layer of the earth |
| % of water on earth | 70% of earth is water |
| island | peice of land surrounded by water on all sides |
| isthmus | finger of land surrounded by water on three sides |
| delta | small streams of water leading into a river |
| lake | large body of water, smaller than an ocean |
| magma | molten rock that is located in the earth's mantle |
| faults | crack in the earth |
| Continental Drift Theory | the theory that the continents were all once joined together, but slowly drifted apart |
| Convection | when magma heats,rises,cools,then shrinks,slowly moving the land |
| Converging | when two plates collide( can be both continental and oceanic plates) |
| core | the very center of the earth |
| continents | the seven large masses of land that are on the earth's surface |
| 4 major types of landforms | volcanoes, mountains, islands, rift valleys |
| archipelago | a peice of land |
| peninsula | portruding peice of land surrounded by water on three sides |
| gulf | small body of water surrounded by land on three sides |
| butte | small,flat raised peice of land |
| lava | magma once it reaches the top of a volcano |
| plate tectonics | plates located under the contintinents and the oceans that are slowly moved by magma in the earth's mantley |
| Sea floor Spreading | when magma comes out of a crack in an oceanic plate and creates another layer on the ocean floor when the magma dries. |
| spreading | when two plates pull apart from eachother |
| faulting | when two plates slide or grind past eachother |
| mantle | the layer of earth under the crust |
| releif | is a |
| strait | skinny stretch of water connecting two peices of land |
| volcano | crack in the earth that exerts magma from the earths mantle |
| sound | is a |
| canyon | is a |
| volcanism | the study of volcaonos |
| fold | when two plates converge and push eachother straght down |
| Pangea | a supercontinent |
| Rift Valley | formed when two plates converge |
| Subduction | when one plate goes under the other |
| Ring of fire | a ring of volcanoes |
