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science chp 3. 4-6
science chpt 3. 4-6
Question | Answer |
---|---|
glacier | A large mass of moving ice and snow on land. |
moraine | A ridge formed by the till deposited at the edge of a glacier. |
kettle | A small depression that forms when a chunk of ice is left in glacial till. |
Valley glacier | A long, narrow path that forms when snow and ice build up in a mountain valley. |
Continental glacier | A glacier that covers much of a continent or large island. |
Ice age | One time in the past when continental glaciers covered large parts of earths surface. |
plucking | The process by which a glacier picks up rocks as it flows over the land. |
till | The sediments deposited directly by a glacier. |
beach | Wave-washed sediment along a coast. |
longshore drift | The movement of water and sediment down a beach caused by waves coming into shore at an angle. |
spit | A beach formed by long shore lift that projects like a finger out into the water. |
deflation | Wind erosion that moves surface materials. |
sand dune | A deposit of wind- blown sand. |
loess | A wind formed deposit made of fine particles of clay and silt. |