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Science
Earth
| Question | Answer |
|---|---|
| the material that forms Earth's hard surface | rock |
| scientists who study earth | geologists |
| features formed in rock(ex. plateau, waterfalls, canyon, moutain, desert, etc.) | landforms |
| Earth surfaces changes its appearence due to: (2) | 1. constructive forces- building up (ex. volcanos build mountains and islands2. destructive forces-wearing down erosion(ex: oceon waves wind water |
| how long is the Earth's radious | 6,000 kilometers |
| scientists use ________ methods to studt earth | indirect |
| scientists study _______________ paths to understand what the interior is made of | seismic waves |
| as you go deeper into the earth ________ and ___________ increase | pressure , temperature |
| 3 main layers | crust, mantle, core |
| outer layer of rock | crust |
| _ -__ km thick is crust | 5-40 |
| the crust thicker under __________ and thinner under ___________ | mountains oceans |
| 2 kinds of crust | continental oceanic |
| the rock that makes up the oceans crust dark, dense | basalt |
| usually light makes up continental floor | granite |
| middle of the earth - rigid | mantle |
| the rigid part of crust and upper mantle | lithosphere |
| greek word meaning stone | lithos |