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GriffithSci6
Science Practice
Term | Definition |
---|---|
slump | a type of mass movement that occurs when a mass of material moves down a curved slope |
glaciers | large, moving masses of ice and snow that changes land areas of Earth's surface through erosion and deposition |
weathering | mechanical or chemical surfaces process that breaks rock into smaller pieces |
mass movment | any type of erosion that occurs as gravity moves minerals down slope |
plucking | a process that adds boulders,gravel,and sand to a glaciers bottom and sides as water freezes and thaws,breaking off pieces of surrounding rock |
erosion | process in which surface materials are worn away and transported from one place to another by agents such as gravity, water, wind, and glaciers. |
deposition | dropping of sediments that occurs when an agent of erosion such as gravity, glacier, wind, or water, loses its energy and can no longer carry its load |
creep | a type of mass movement in which sediments move down slope very slowly, is common in areas of freezing and thawing, can cause walls, trees, and fences to lean downhill |
outwash | material deposited by melt water from a glacier |
rockfall | rocks break loose from a mountain and fall to the ground |
esker | a melting glacier when melt water forms a river within the ice |
valley glacier | glaciers that form between mountain peaks, above the snow line, where snow lasts all year. Grow and creep along. |
till | a mixture of different sized sediments that is dropped from the base of a retreating glacier and can cover huge areas of land. |
rockslide | steep layers of rock slip down hill |
mudflow | look like mud pies and can destroy almost anything in its path |
moraine | large ridge of rocks and solid deposition by a glacier when it stops moving forward |
continental glacier | huge mass of ice and snow |