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Our Changing Surface

Science - Earth

What is a spit? elongated strip of sand coming off of a shore, deposited by longshore drift
What is a sandbar? a bar of sand completely within water
What is a barrier beach? a beach created when wave deposition forms a strip of land acting as a barrier to the mainland
What is one land feature made by wave erosion? Sea arch.
Another? Wave cut cliff.
And another? Sea stack.
And another one? Sea caves.
What force causes a wave to slow down and break when it reaches shallow water? Friction.
What is a moraine? a mound of glacial drift that is unstratified
What is a drumlin? smoothly rounded hill, usually narrow or oval shaped
What is a kettle lake? lake formed when sediment is deposited by a retreating glacier
What is one land feature made by glacial deposition? cirque
Another? horn
And another? arete
And another? U-shaped valleys
What is till? Till is what sediment is called when it has been deposited. They’re the same thing, only they have different names at each stage, like a caterpillar does.
The process where wind picks up sediment and moves it is called erosion.
When waves crash onto the beach at an angle a is created at the shoreline. long-shore drift
What is a sand dune? a ridge of sand created by the wind; found in deserts or near lakes and oceans
What is a loess? deposit of wind-blown sediment
What is karst topography? A region where the terrain has been dissolved by chemical and physical weathering of bedrock.
What is one feature of groundwater deposition? stalactite - deposit of groundwater when it drips from the ceiling of a cave
Another? stalagmite - deposit of groundwater when it drips from the ceiling and collects on the ground of a cave
What is one feature that can form from groundwater erosion? Cave
And another? Caverns
What is the weakest agent of erosion and deposition? Wind
What is the strongest agent of erosion and deposition? Water
What is mass movement? Mass movement is when a part of the Earth's surface shifts.
What causes mass movement? Gravity
What else is water known for? universal dissolvent
Created by: Sarahelena