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Earth science 3

Earth Science 1/21/14

QuestionAnswer
Sand dunes a deposit of wind blown sand
wind is the weakest agent of erosion TRUE
deflation the process by witch wind removes surface materials
the amount of soil the great plains lost in the 1930s about one meter
star shaped sand dune forms when the wind direction changes frequently
crescent shaped sand dune forms when the wind blows in the same direction
loess fine wind deposited sand
glacier a large mass of land that moves over land
continental glacier a glacier that covers most of the continent or large island. Currently covers over 10% of earths surface.
valley glacier a long narrow glacier that forms where ice and snow have built up high in a mountain valley. the depth of the ice and snow can be up to 30 to 40 meters.
plucking as the glacier moves over the land, it picks up rocks
Moraine the ridge of till at the farthest point reached by the glacier
Kettle a small depression that forms when a block of ice is left in a glacial till
till the mixture of sediments that a glacier deposits directly on the surface
wave as the wind makes contact with the water some energy transfers to the water
major force of erosion along coast waves
impact large waves can hit rocks along the shore with great force
abrasion as a wave approaches shallow water, it picks sediment including sand and gravel
Headland part of the shore that sticks out in the ocean
beach an area of wave washed sediment along the coast
long shore as waves repeatedly hit the beach some of the beach sediment moves down the beach with the current
barrier beaches sand above sea level forming a long narrow island parallel to the coast
spit a beach that projects out like a finger into the water
Created by: Tangee0913
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