| A | B |
|---|
| Geology | the study of the earth, particularly rocks n' minerals |
| Crust | Outer most and thinnest layer of the earth |
| % of water on earh | 90% |
| island | land, smaller than a continent that's surrounded by water |
| isthmus | narrow connecting strip of land that joins 2 larger areas of land |
| delta | triangular land area @ river mouth |
| lake | large body of water surrounded by land |
| magma | molten rock deep within the earth from whic igenious rock is formed by solidification at or near the eath's surface |
| faults | displacement in earth's crust |
| Continental Drift Theory | a theory that explains the formation, alteration, and extremely slow movement of the continents across the earth's crust. The continents are formed to have one large mass that split, drifted apart, and in places collided again. |
| Converging (2 types) | Two plates that hit one another |
| core | center of earth; is composed of molten rock and alloy n' nickel |
| continents | part of the earth's crust that rises above sea level |
| 4 major types of landforms | plain, plateau, mountain, volcano |
| archipelago | group or chain of islands |
| peninsula | a narrow piece of land that juts out 4rm the mainland into a sea or lake |
| gulf | inlet of sea |
| butte | flat-topped hill |
| lava | molten rockflowing 4rm a volcano |
| plate tectonics | theory that ascribes continental drift, volcanic eruptions and the formation of mountain belts to moving plates of the earth's crust supported on less rigid mantle rocks |
| Sea Floor Spreading | theory that suggests that the ocean floor is constantly seperating |
| spreading | opening or extending |
| faulting | breaking |
| mantle | part of earth that lie between the crust and the core |
| relief | elevations of land |
| strait | channel joining 2 seas |
| volcano | a mountain created by the desposition and accumulation of materials ejected 4rm a vent in a central crater |
| sound | something that can be heard |
| canyon | a deep valley that is surrounded by land higher then itself |
| volcanism | The study of volcanoes |
| fold | A bend or buckle in the earths crust |
| Pangea | Name of supercontinent thought to have existed millions of years ago |
| Rift Valley | a large split along the crest of an underwater mountain system |
| subduction | Plate sliding above the other |
| Ring of Fire | circle of volcanoes surronding the Pacific Ocean |
