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Landforms
Geography
| Question | Answer |
|---|---|
| What is a core | at the center, temperature and pressure are very highdivided into inner and outer core is made up of liquid metal iron and nickel |
| What is a mantle | outside of the core is the mantle, which makes up most of earth’s mass |
| what is the Crust | outer most of earth’s layers it is about 25 miles thick |
| what is magma | liquid rock that is within the earth’s surface |
| what is lava | magma that has reached the earth’s surface |
| what is plate tectonics | explains how forces within the earth create land forms |
| what is Continental Drift | movement of earth’s plates across the mantle (usually at a rate of about one inch per year) |
| what is rift valleys | formed underwater when tectonic plates move apart from one another |
| what is abyssal plains | when ocean floors sink because there is no earth below them, these regions are smooth |
| what is continental shelves | The surfaced that extends under shallow oceans |
| what is Folds | areas of compressed rock that occurs when plates collide with each other |
| what is faults | occurs when rock masses have moved apart and broken away from each other |
| what is Weathering | process by which rocks break and decay over time |
| what is Sediment | the smaller particles of rock, gravel, sand, and mud that weathering breaks rocks into |
| what is erosion | movement of surface material from one location to another, wind water and ice cause this to take place |
| what is a glacier | thick masses of ice also erode rock and moves sediment |
| what is plataeu | an elevated flatland that rises sharply above nearby land on at least one side |
| what is Alluvial fan | sediment eroded from a mountain to the base of the mountain |
| what is delta | accumulated sediment at the opening of an ocean |