Types of Erosion
Chemical erosion
Small pieces that break off of rocks.
Sediments
What types of changes are included in the process of weathering? A. Chemical changes B. Physical changes C. Both
C. Both
Volcanoes change Earth's surface...(slowly/quickly)
Quickly
Wind and water can carry sand and small pieces of rock to new locations. True or False
True
Ice/glacial erosion
The laying down of sediment carried by wind, water, or ice.
Deposition
Is erosion a natural process?
Yes, the causes of erosion are nautral processes.
Weathering changes Earth's surface... (Slowly or quickly)
Slowly
When rainwater seeps into cracks in rocks and __________, it expands and causes the rock to split apart.
Freezes
When sand and rocks get blown to a new place it is an example of this type of erosion.
Wind erosion
The breaking down of rock on Earth's surface into smaller pieces.
weathering
Your school park was built on gravel. Your school park has closed because erosion has been happening. The swing set has begun to move forward and sunk into the ground. How could this have happened?
Answers may vary
Erosion can change the shape of the land faster than a volcano can. True or False
False
Weathering over long periods of time breaks rock into ____________ pieces. (larger or smaller)
Smaller
Soil moving down a hill after a rainstorm is an example of this type of rainstorm.
Water erosion
The process by which weathered rock is picked up and moved to a new place.
Erosion
The grand canyon is an example of what type of erosion?
Water erosion
Water can weather rock by: A. eroding soil B. by freezing and melting
Freezing and melting
Fast flowing rivers can pick up and carry rocks (far/short) distances.
Far
Give an example of how erosion could cause a rock from Catoctin Mountain Park to end up in the Chesapeake Bay.
Answers may vary
Huge sheets of ice that move slowly over land.
Glaciers
While driving along the highway in Pennsylvania I noticed huge rocks along the highway. Large nets covered these rocks and seemed to go from the top to the bottom. Were these nets put in place to stop weathering or erosion?
Erosion
Plants __________ how fast soil erodes from an area. (Speed up/slow down)
Slow down
All of the following are forces that change landforms EXCEPT: a. wind b. moving water c. glaciers c. physical features
Physical Features