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Science Review
Rock Cycle, Weathering, and Erosion
| Term | Definition |
|---|---|
| crust | The thin and solid outermost layer of the Earth above the mantle |
| mantle | the layer of the earth between the crust and the core |
| outer core | molten, liquid metal is in this layer |
| inner core | Solid Iron and Nickel make up this layer |
| crust | thinnest under oceans and thickest under mountains |
| mantle | thickest layer of the earth |
| outer core | source of the Earth's magnetic field is Iron from this core |
| inner core | Hottest layer of Earth. |
| crust | least dense and thinnest layer |
| mantle | contains some liquid (molten) rock, but mostly solid |
| mantle | makes up about 2/3 of the Earth's mass |
| weathering | the process by which rock is broken down into smaller pieces |
| deposition | the dropping of weathered rock by wind or moving water |
| sediment | very small pieces of rock;examples include sand and silt |
| wind and moving water | this carries sediment from place to place |
| erosion | removal of soil and rock from the Earth's surface |
| Grand Canyon | formed by the moving water of the Colorado River |
| convergent | when two plates collide or travel toward each other |
| divergent | when two plates move away from each other |
| transform | when two plates slide past each other |
| convergent | this type of boundary forms volcanoes and mountains |
| divergent | this type of boundary forms ridges and rift valleys |
| transform | this type of boundary causes earthquakes |
| cooled magma | Igneous rock comes from _______________. |
| layers | Sedimentary rock forms in ___________. |
| streaks | Metamorphic rock has ____________ or bands of colors running through it. |
| fire | What does ignite (igneous) mean? |
| fossil | A sedimentary rock might have a __________ in it. |
| metamorphic | What type of rock is marble? |
| igneous | What type of rock is granite and basalt? |
| pressure | Metamorphic rock undergoes heat and _______________. |
| water | What causes most erosion on earth? |
| wind | Besides water, what is the next biggest cause of erosion on earth? |
| weathering | What is the "breaking down" of rock called? |
| erosion | What is the "carrying away" of rock called? |
| sedimentary | Which rock type is formed in layers at the bottom of ocean? |
| deposition | The process after weathering and erosion when sediment comes to rest in a certain place |