Weathering And Erosion Snapshots
Erosion and Weathering Snapshots
MORE DECKS TO EXPLORE
PRESENTATION OUTLINE
WEATHERING AND EROSION SNAPSHOTS
By: Connie Duopu, Core 5
EROSION DEFINITION
- The process by which natural forces move weathered rock and soil from one place to another
TWO EXAMPLES OF EROSION BY GRAVITY
Gravity can move rock and other material downhill, gravity causes mass movement
Erosion by gravity example #1
A MUDFLOW IS THE FIRST EXAMPLE OF EROSION BY GRAVITY
A mudflow is the rapid downhill movement of a mixture of rock,water,and soil
Erosion by gravity example #2
A LANDSLIDE IS THE SECOND EXAMPLE OF EROSION BY GRAVITY
A landslide occurs when rock and soil slide quickly down a steep slope
TWO EXAMPLES OF EROSION BY HUMAN ACTIVITY
Erosion by human activity example #1
DEFORESTATION IS THE FIRST EXAMPLE OF EROSION CAUSED BY HUMANS
Deforestation causes soil erosion
Erosion by human activities example #2
OVERGRAZING IS THE SECOND EXAMPLE OF EROSION CAUSED BY HUMANS
Overgrazing also causes soil erosion
A WATERFALL IS A TYPE OF MOVING WATER EROSION
Waterfalls can occur where a river meets an area rock that is hard and erodes slowly
WIND EROSION IS CAUSED BY DEFLATION
Deflation is the process where wind removes surface materials
GLACIERS CAUSE EROSION BECAUSE OF MOSTLY PLUCKING AND SOME ABRASION
Plucking is when glacier flows over the land and picks up rocks in the process
WAVES SHAPE THE COAST THROUGH EROSION
Waves erode the land by the hard impact aheadland is a part of the shore to resist erosion
SOIL EROSION IS A NATURALLY OCCURRING PROCESS THAT AFFECTS ALL LANDFORMS
Photo by benchilada
EROSION IN MINNESOTA
- Trees in the water line the banks of Riceford Creek near Spring Grove, Minnesota, has suffered a lot of erosion this year. Bank erosion is a natural process, but it's happening at a much faster rate than rivers and streams can handle
WEATHERING DEFINITION
- The process that breaks down rock and other substances
THREE EXAMPLES OF MECHANICAL WEATHERING
Mechanical Weathering when the rock is broken down physically into smaller pieces
Mechanical Weathering example #1
ANIMAL ACTIONS IS AN EXAMPLE OF MECHANICAL WEATHERING
Animals that burrow in the ground, loosen and break apart rocks in the soil
Mechanical Weathering example #2
FREEZING AND THAWING IS ALSO AN EXAMPLE OF MECHANICAL WEATHERING
When water freezes in a crack rock, it expands and make the crack bigger
Mechanical Weathering example #3
PLANT GROWTH IS ANOTHER EXAMPLE OF MECHANICAL WEATHERING
Plant roots enter cracks in rocks, as roots grow they force the crack apart
THREE EXAMPLES OF CHEMICAL WEATHERING
Chemical weathering is the process that breaks down rocks through chemical change
Chemical weathering example #1
OXYGEN IS AN EXAMPLE OF CHEMICAL WEATHERING
When iron combines with oxygen with water it's called oxidation, which is rust and makes rocks soft and crumbly and gives it a red and brown color
Chemical Weathering example #2
CARBON DIOXIDE IS ALSO AN EXAMPLE OF CHEMICAL WEATHERING
When carbon dioxide dissolves into water it causes chemical weathering
Chemical Weathering example #3
LIVING ORGANISMS IS THE FINAL EXAMPLE OF CHEMICAL WEATHERING
As plants roots grow, they produce weak acid that slowly dissolve rock around the roots
WEATHERING IN MINNESOTA
- Taylor's fall is an example of weathering that is occurring in Minneosta. The fall weathers away pebbles and rocks from the bank of the stream this is known as mechanical weathering
