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- 1. Multiple Choice
What type of changes does erosion cause?
Physical changes
Chemical changes
Electrical changes
Magnetic changes
- 2. Multiple Choice
Erosion occurs when natural forces alter the landscape. What does it mean to alter a landscape?
To blow dust around
To change what land looks like
To deposit silt at the mouth of a river
To create a floodplain
- 3. Multiple Choice
Which term best describes the rate at which glacial erosion takes place?
Quick
Ephemeral
Slow
Sudden
- 4. Multiple Choice
How do sandy beaches form?
Waves pounding pebbles into smaller and smaller pieces
Wind eroding pebbles into smaller pieces
Water freezing and thawing the cracks of pebbles
Rain wearing away rocks into smaller and smaller pieces
- 5. Multiple Choice
Which of the following features would be most affected by weathering?
- 6. Multiple Choice
How would a sandblasted rock differ from a rock that hasn't been sandblasted?
A sandblasted rock would be bigger
A sandblasted rock would be smoother in shape and less jagged
A sandblasted rock would be composed of volcanic material
A sandblasted rock would be covered by water
- 7. Multiple Choice
Why is it hard to see glacial erosion in action?
Because glaciers are so big
Because light from glaciers refracts too much
Because glaciers move very, very slowly
Because glacial erosion is usually very subtle
- 8. Multiple Choice
What do floodplain, sandbars, and river deltas have in common?
They've all been formed by water erosion
They've all been formed by glacial erosion
They've all been formed by wind erosion
They've all been formed by sandblasting
- 9. Multiple Choice
Based on the information presented in the movie, what would be a simple way to prevent erosion?
Blocking the wind
Planting trees
Preventing rainfall
Preventing the flow of rivers
- 10. Multiple Choice
Based on the information presented in the movie, what can you infer about the type of erosion that formed the Grand Canyon?
Wind erosion
Water erosion
Sandblasting
Glacial erosion
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