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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 |