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Cody Murray's science game

Weathering erosion review

Chemical WeatheringChanges: Mineral composion, chemical makeup of rocks. When there is a chem. change minerals can be added to or removed from rocks, or rocks/minerals can be decomposed (decomposition).
Mechanical WeatheringWhen rocks are broken into different shapes and smaller pieces, It also rounds out the sharp points in rocks.
ExfoliationWhen rocks break due to temperature they often break in circular slabs parellel to the rocks surface.
DeflationWhen wind carries silt, sand and clay away from the land.
AbrasionThe wearing away of rocks by particles carried by wind, water, or other forces.
OasisWind erodes the sand to the water depth of soil and enables plants to grow.
WindMost active in deserts, fields and beaches. Loose material can easily be carried by wind.
Running WaterMajor cause of erosion.
Organic ActivityPlants and animals causing weathering.
OxidationWhen oxygen combines with another substance to create a new one.
CarbonationWhen carbon dioxide dissolves in water a weak acid is produced EX: Pop drink fizz. When it falls it dissolves certain minerals in the ground.
TemperatureIn hot weather the rock expands, when it cools down it contracts. The continuous process make the surface particles crack or flake off.
Sulphuric AcidSulphur oxides, byproducts of coal mix with rain to make acid rain. This corodes rock, metals and other material quickly.
Plant AcidsPlants produce weak acids that dissolve certain minerals in rocks. EX: Mosses make acids that break rocks into smaller pieces.
ErosionThe process of moving weathered rock and soil from one place to another. Over time this creates new landforms. Gravity, wind, running water, waves and glaciers are the 5 agents of erosion.
DepositionThe process of rocks and soil being moved and deposited in other places.
LoessAccumulations of fine particles of sand and silt deposited by the wind.
Wind BreakA barrier that slows wind down.
RunoffWhen rain falls it evapourates, sinks and rins over the surface. As it does, it carries particles of sand, clay, and gravel with it.
Drainage SystemRills to Gullies to Streams to Rivers.
Drainage BasinThe area drained by a main river and its channels.
TributariesA large stream that flows into the areas main river.
DeltaWhen a river meets a lake or ocean it slows down and spreads out because of deposited sediment.
GlaciersLarge massas of moving ice. They're very powerful. They erode by abrasions and plucking away under it.
Sea StacksA column of resistant rock left standing on beaches.


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