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15 Cards in this Set
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1) Give the definition of EROSION 2) How does it impact the earth? |
Erosion happens when water and wind eat away at rock or soil. Thanks to gravity, erosion moves earth downhill and downstream. Over time, erosion can turn an entire mountain into mud on the bottom of a bay.
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1) Define DEPOSITION 2) How does it impact the earth |
Erosion happens when water and wind eat away at rock or soil. Thanks to gravity, erosion moves earth downhill and downstream. Over time, erosion can turn an entire mountain into mud on the bottom of a bay.
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1) Define WEATHERING 2) How does it impact the earth |
Weathering is the breakdown of rocks at the Earth’s surface, by the action of rainwater, extremes of temperature, and biological activity. It does not involve the removal of rock material There are three types of weathering, physical, chemical and biological. |
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How do humans affect erosion and deposition? |
Humans add greatly to the natural processes of land erosion through activities, such as highway and construction, destruction of forests (clear-cutting), set forest fires, poor landfill projects, etc… Today, human activities contribute more than ever to the erosion on the Earth’s surface.
Rock particles are deposited somewhere else --the final step in the erosional-depositional system.
· agents of erosion become agents of deposition · Final deposition of particles (sediments) usually occurs at the mouth of a stream--a process called horizontal sorting takes place: o The sediments that were once carried down the stream are arranged from largest to smallest. |
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Define Sedimentary Rock and explain how it is formed |
Sedimentary rocks are formed from broken down bits of other rocks or even from the remains of plants or animals. The little pieces collect in low-lying areas by lakes, oceans, and deserts. They are then compressed back into rock by the weight of the materials around them and on top of them. |
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Define Metamorphic rock and explain how it is formed |
Metamorphic rock: Rock formed by transformation of preexisting rock through changes in temperature and pressure.
Read more: http://www.scienceclarified.com/Ro-Sp/Rocks.html#ixzz412nMYGeQ |
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Define Igneous Rock and explain how it is formed |
Igneous rock: Rock formed from the cooling and hardening of magma.
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Name the three components of soil |
Silt, sand and rocks |
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How does burying a banana peel break down and impact the soil? |
banana peels break down quickly -- either in the soil or in compost -- making those nutrients and vitamins available to plants |
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How does EROSION change the earths surface? |
Erosion changes the surface by creating rivers, streams and valleys. |
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Describe how PLAINS are formed |
Plains are formed primarily by erosion and the deposition of sediment.
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Describe how LAKES are formed |
Many lakes were formed by glaciers that melted. This caused water to fill depressions in the earth's surface resulting in Lakes |
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Explain how a VOLCANO is formed |
Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger. |
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Explain how a MOUNTAIN is formed |
Movements of tectonic plates create volcanoes along the plate boundaries, which erupt and form mountains. |
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Explain how a DELTA is formed |
When a river reaches a lake or the sea the water slows down and loses the power to carry sediment . The sediment is dropped at the mouth of the river. Some rivers drop so much sediment that waves and tides can't carry it all away. It builds up in layers forming a delta. |
