Definitions
What is Weathering?
A. When rocks are distributed from one place to another.
B. When sediments are deposited by the erosion process.
C. When rocks are broken down into smaller pieces.
D. When silt is broken down.
C. When rocks are broken down into smaller pieces.
What is an example of erosion?
A. Wind moving small particles in a desert sandstorm
B. Water freezing in a crack of a boulder
C. Roots of a tree growing through the road
D. Rocks on a mountain breaking because of people climbing on them
A. Wind moving small particles in a desert sandstorm
True or False:
Weathering breaks it, Erosion takes it.
True!
What is Erosion?
A. When water, ice, plants, or wind breaks down rocks.
B. When gravity, wind, water, or ice moves rocks.
C. When sediments of rocks are broken down into smaller pieces.
D. When a plant splits a rock by growing in a crack.
B. When gravity, wind, water, or ice moves rocks.
A large canyon has many layers of rocks. This shows it was most likely formed by what?
A. A waterfall that smoothed rocks.
B. Rocks that came from other places.
C. A big rainstorm that washed rocks away.
D. A flowing river that cut into the rocks.
D. A flowing river that cut into the rocks.
True or False:
Weathering is what causes rocks to move down a stream.
False!
Erosion moves rocks.
What is Ice Wedging?
A. Erosion by wind
B. Weathering by acid rain
C. Weathering by water and ice
D. Erosion by water and ice
C. Weathering by water and ice
Which is an example of erosion?
A. A stream carries rock sediments through a valley.
B. A jagged rock becomes smooth when sand blows against it over time.
C. Migrating animals causing tiny pieces of rock to break.
D. Root wedging.
A. A stream carries rock sediments through a valley.
True or False:
Sand Dunes are formed when wind blows against the beach grass.
TRUE!
What is plant wedging?
When a plant grows in the crack of a rock and causes the crack to get bigger over time.
If you see a plant growing in a rock, you can infer that over time...
A. The plant will be buried in the crack of the rock.
B. The rock will cause the plant to stop growing.
C. The plant will continue to grow and make the crack bigger.
D. The rock will eventually crush the plant.
C. The plant will continue to grow and make the crack bigger.
True or False:
Temperature is NOT a direct cause of erosion.
True!
Gravity, water, and wind are direct causes of erosion.