Transcript Weathering and Erosion

Weathering and Erosion
Created by Cale Charbonneau
Weathering
•
Weathering is the breaking down of
rocks, soils, and minerals. Two
important classifications about
weathering processes exist physical
and chemical weathering. The second
classification chemical weathering has
the direct effect of the atmospheric
chemicals. Physical weathering is the
process that disinigrates rocks. Frost
weathering is the name for several
processes where ice is present.
Chemical weathering is a ongoing
process as the mineralogy of the rock
adjusts to the near surface
environment. Biological weathering is
the release acidifying molecules.
Erosion
• Erosion is the process by which
soil and rock are removed from
the earth’s surface, then brought
and deposited somewhere else.
Loosened soil by the surface runoff
that is flowing in thin sheets. Wind
erosion is a geomorphologic force.
What causes weathering and
erosion
• Weathering is caused by elements of nature such as
wind, rain, sleet, and snow. Heat is mostly the cause of
chemical weathering. Causes of physical weathering are
abrasion, crystallization, thermal insulation, wetting and
drying, and pressure release. The cause of biological
weathering are bacteria, to plants to animals.
• Erosion is caused by naturally on through artificial
means. Water causes water erosion. Waves made by
storms, winds, or fast moving motor craft cause coastal
erosion. Gravity causes gravitational erosion. Wind
erosion is caused by wind that picks up tiny particles and
blows it into whatever is eroding.
The factors that control erosion
• The factors that control the rate of erosion
are water, wind, and gravity
Soil erosion
• Soil erosion is the
loss of soil by wind
and water. It’s a
natural process. Soil
shifts from one
location to another.
Erosion in the southwest
• Erosion rates cape Shoal water have over
100 feet per year for a century. Erosion is
cutting into the cape. 90 camp sites could
be lost.
Wind erosion prevention
• Farmers will need to tillage the soil.
Farmers will need to rotate the crops.
Another way is to strip crop. Farmers can
also try mulching the soil.
Landslides and mudflows
• Landslides happen when masses of rock
move down a slope. Mudflow is downhill
flowing mud.
Bibliography
• The websites I used were ehow.com,
Wikipedia, federal emergency
management agency, http://educatoral.
Com/weathering_erosion_webques.html,
q&a, and wisegeek.