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unit 5 Geography
| Question | Answer |
|---|---|
| What is weathering? | the process by which rocks break and decay over time |
| what is the core? | its the center of the earth were tempatures and pressure are very high |
| what is the innner core made of? | `a solid |
| what is the outer core made of? | liquid metal like iron and nickel |
| what is the mantle? | the layer after the core in between the core and the crust; the heavest layer |
| what is the crust? | the outer most layer aorund the mantle; 25 miles thick |
| what is magma? | liquid rock in the earth's surface |
| what is lava? | magma that has reached the earth's surface |
| what is plate tectonics? | it explains how forces within the earth create landforms |
| the earths surface broken into what? | several, large, slow moving, plates |
| what is sediment rock? | small particles of rock, gravel and sand and mud that was made that way from weathering |
| what is erosion? | the movement of material on the surface from location to location; it is caused by wind water and ice |
| what is glaciers? | thick masses of ice that can help erode the rock and moving sediment |
| what is a plateau? | an elevated flatland that rises sharply above nearby land on at least one side |
| what is alluvial fan? | sediment eroded from moutains to the base of moutains |
| what is a delta? | acumulated sediment at the opening of oceans |