Erosion Brain Pop

What type of changes does erosion cause?

• Physical Change

• Chemical Change

• Magnetek Change

• Electrical Change

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

Which term best describes the rate at which glacial erosion takes place?

• quick

• slow

• ephemeral

• sudden

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.

Which of the following features would be most affected by weathering?

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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 covered by water.

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

What do floodplains, 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.

Based on the information presented in the movie, what would be a simple way to prevent erosion?

• Planting trees

• Blocking the wind

• Preventing rainfalls

• Preventing the flow of rivers

• Wind erosion

• Water erosion

• Sunblasting

• Glacial erosion