NGSS.4-ESS2-1

When rocks are broken down into smaller pieces

• erosion
• weathering
• sediment

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NGSS.4-ESS2-1

This valley is a result of

• water erosion
• deposition
• glaciers
• wind

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NGSS.4-ESS2-1

The process of breaking up Earth's surface into sediment is called...

• weathering
• erosion

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NGSS.4-ESS2-1

What is weathering?

• a type of climate
• the movement of rock pieces from one place to another
• the breaking down of rock into smaller pieces
• a force that pulls pieces of rock downhill

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NGSS.4-ESS2-1

Wind blowing sand from one location to another

• weathering

• erosion

• deposition

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NGSS.4-ESS2-1

On a recent field trip to a local river, the science class collected several rocks from the river bed. The rocks were all smooth and rounded. Why were the rocks in the river bed smooth?

• Rushing water in the river wore away any jagged edges.

• The minerals from which the rocks are made cannot form jagged edges.

• Over centuries, the action of the wind caused the rocks to become smooth.

• Plants along the river released substances that mixed with the water to smooth the rocks.

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NGSS.4-ESS2-1

How does water help to break apart rock?

• by freezing and expanding

• by melting and contracting

• by condensing and expanding

• by evaporating and contracting

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NGSS.4-ESS2-1

_______________ moves material from one place to another.

• Weathering

• Erosion

• Deposition

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NGSS.4-ESS2-1

How long does the weathering process take?

• A few days.

• No more than a month.

• Exactly one year.

• Years and Years.

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NGSS.4-ESS2-1

Which process best describes the formation of a U-shape valley?

• Weathering & Erosion

• Erosion & Deposition

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NGSS.4-ESS2-1