La Mansion Del Pajaro Serpiente

6.3 Mass-Wasting and Glaciers

I. Mass Wasting
A. Mass wasting can be defined as the downhill movement of a large mass of rocks or soil because of the pull ofgravity.
1. Material moves in bulk as a large mass.
2.
3. The mass moves all at once.
4.
B.
1. A landslide is the rapid downhill movement of soil. Looserocks, and boulders. Two types of landslides: rockfall and mudslide.
2.
3. The amount of erosion that moves depends on several factors. Type of rock, amount ofwater in the soil, how strong the rock and soil are held together, and the slope of the hill.
C.
1.
D. Land Use Practices
1. People can affect both the severityof mass wasting and the tendency for it to occur.
2.
3.
4. Landscaping can make a slope steeper.
II. Glacial Erosion and Deposition
A. A glacier is alarge mass of ice that formed on land and moves slowly across Earth’s surface
1. Glaciers form when the snowfall is greater than the snowmelt.
2. Glaciers can moveseveral inches each day.
B. There are two types of glaciers.
1.
2.
C. Glacial Erosions
1. Glaciers erode Earth’s surface as they slide over it.
2.Rocks frozen within the glacier will carve grooves and scratches on underlying land.
3.
D. Glacial Deposition
1.
2. Sediment from the glacier is deposited asthe glacier retreats and melts.
3. Till is a mixture of various sizes of sediment deposited by a glacier. Till is poorly sorted. Till canrange in size from boulders to silt.
4. A moraine is
5. Outwash is
E. Land Use Practices
1. People can contribute to the melting of glaciers.