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Earth Science Review
Earth Science
| Question | Answer |
|---|---|
| hypothesis | a possible answer to your problem |
| atmosphere | the layer of gases that surrounds the earth and contains clouds |
| hydrosphere | the water part of the earth's surface |
| lithosphere | the rigid outer schell of the earth. |
| crust | the top layer of the earth, above the mantle. |
| mantle | the middle layer of the earth, between the crust and the core. |
| core | the center part of the earth, beneath the mantle. made up of iron and nickel. |
| plate tectonics | a theory stating that the earth's surface is broken into plates that move. |
| plates | a large section of the earth's surface made of the crust and the rigid top part of the mantle. |
| weathering | the process that breaks down and changes rocks. |
| physical weathering | breaks the rocks apart, but it doens't change what is made of. |
| chemical weathering | changes the substance that make up rocks. |
| erosion | the moving of weathered rock and soil. |
| deposition | the dropping of minerals moved by erosion. |
| rock cycle | the ways that rocks change from one form to another. |
| igneous rock | rocks formed from melted mantle that comes from deep inside the earth. When it cools, the melted material hardens into igneous rock. |
| metamorphic rock | Rock formed when igneous or sedimentary rock id changed by heat and pressure. |
| sedimentary rock | Rocks formed when sediments such as sand are pressed or cemented together. |
| mineral | a natural, nonliving solid with a definite chemical structure. These are the components of rock. |