Constructive and Destructive Forces Unit

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Constructive and Destructive Forces Unit

• 5th Grade

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constructive process

• the building up of the Earths surface including
  deposition, earthquakes, volcanoes, and faults

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destructive process

• the tearing down of the Earths surface including
  weathering, erosion, impact of organisms,
  earthquakes, and volcanoes

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deposition

• deposits of material which is added to a landform

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earthquake

• underground movement in the Earths crust that
  may cause change in the lithosphere

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erosion

• movement of material by water or wind

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weathering

• the breakdown, either physical or chemical, of
  rocks on the Earths surface

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fault

• a deep crack in the Earths surface where plates
  slide against each other

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volcano

• the escape of hot, molten rock and gas from the
  Earths interior

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delta

• an area of new land at the mouth of a river,
  formed from sediments carried by the river

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sand dunes

• a hill of sand, made and shaped by wind

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decomposers

• organisms that lives by feeding on and breaking
  down dead plants and animals

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organisms

• an individual form of life, such as a plant,
  animal, bacterium, or fungus

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flood control

• the use of tools such as dams and levees to
  reduce destruction caused by floods

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beach restoration

• the process of replacing sand on a beach that was
  lost due to erosion and deposition

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seismological studies

• the study of earthquakes