Weathering and Erosion

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

Tags

NGSS.MS-ESS2-2

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

• Quick

• Short

• Slow

• Sudden

How do sandy beaches form?

• Waves pounding pebbles int 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

Tags

NGSS.MS-ESS2-2

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

• A

• B

• C

• D

Tags

NGSS.MS-ESS2-2

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

Tags

NGSS.MS-ESS2-2

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

Tags

NGSS.MS-ESS2-2

What would be a simple way to prevent erosion?

• Blocking the wind

• Planting trees

• Preventing rainfall

• Preventing the flow of rivers

The process by which rocks and other surfaces are broken down.

• Weathering

• Erosion

Tags

NGSS.MS-ESS2-2

Water getting into cracks, freezing, and breaking the rock apart.

• Weathering

• Erosion

The freezing and thawing of water cracking pieces off a rock.

• Weathering

• Erosion