Download weathering and erosion outline key

Weathering and Erosion Outline
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Weathering is the process that breaks down rock and other substances on Earth’s
surface. The force of weathering breaks rocks into smaller and smaller pieces.
Erosion is the removal of these small particles of rock by wind , water ice or
gravity.
Weathering and erosion work together to continuously wear down and carry
away the particles, constantly changing the surface of Earth.
There are two main types of weathering:
 Mechanical [sometimes called physical]
 Chemical
Both types of weathering act slowly, but over time, they break down even the
biggest, hardest rocks.
Mechanical weathering breaks rocks down into smaller pieces. The causes of
mechanical weathering include:
Freezing and thawing
Release of pressure
Plant growth
Action of animals and abrasion
Chemical weathering breaks rocks down rock through chemical changes . The
causes of chemical weathering include:
Water
Oxygen
Carbon dioxide
Living Organisms
Weathering and Erosion Outline
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Acid Rain
Erosion is the process by which natural forces move weathered rock and soil from
one place to another.
Some of these forces include glaciers, wind, water, earthquakes, volcanoes,
tornadoes, hurricanes, mud flows, and aAs soon as a rock particle (loosened by
one of the two weathering processes) moves, we call it erosion .
When it comes to rest , or lay down, we call it deposition.
Weathering, erosion, and deposition act together in a cycle that wears down and
build up Earth’s surface.
valanches.