Unit 4 Erosion, Weathering and Deposition Checkpoint

What example of physical/mechanical weathering is this?

• Freeze-Thaw Wedging

• Glaciers

• Plant Root Growth

• Oxidation

Answer explanation

Freeze-Thaw Wedging is a type of physical weathering where water seeps into cracks, freezes, and expands, causing the rock to break apart. This process exemplifies mechanical weathering, unlike the other options listed.

Tags

NGSS.MS-ESS2-2

Click on the two examples of mechanical physical weathering.

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Tags

NGSS.MS-ESS2-2

What kind of erosion is shown here?

• Mechanical Weathering

• Chemical Weathering

• Glaciers

• Deposition of Rock

Answer explanation

Mechanical weathering involves the physical breakdown of rocks without changing their chemical composition. This process can include freeze-thaw cycles, abrasion, and other physical forces, distinguishing it from chemical weathering.

Tags

NGSS.MS-ESS2-2

What kind of weathering is shown here?

• Chemical

• Mechanical

• Erosion

• Deposition

Answer explanation

Mechanical weathering involves the physical breakdown of rocks without changing their chemical composition. This process can include actions like freeze-thaw cycles or abrasion, distinguishing it from chemical weathering.

Tags

NGSS.MS-ESS2-2

Plant Root Growth and Animal Action is part of...

• Erosion

• Deposition

• Mechanical Weathering

• Chemical Weathering

Answer explanation

Plant root growth and animal action contribute to mechanical weathering by breaking down rocks physically. This process differs from erosion and deposition, which involve the movement and accumulation of materials.

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS2-4

This is...

• Chemical Weathering

• Erosion

• Deposition

• Freeze-Thaw Wedging

Answer explanation

Erosion is the process of moving soil and rock from one location to another, often by water, wind, or ice. This distinguishes it from chemical weathering, deposition, and freeze-thaw wedging, which involve different geological processes.

Tags

NGSS.MS-ESS2-2

Click on the two examples of Freezing and Thawing Wedging

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Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

Click on the 1 example of Chemical Weathering (Oxidation)

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Physical and chemical weathering both

• change rocks into new materials.

• dissolve rocks.

• break rocks into smaller pieces.

• require exposure to air.

Answer explanation

Physical and chemical weathering both break rocks into smaller pieces. While they may alter the composition of rocks, their primary effect is the fragmentation of larger rocks into smaller fragments.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1

Select the answer that shows the order of events a rock goes through.

• erosion, weathering, deposition

• weathering, erosion, deposition

• deposition, weathering erosion

• erosion, deposition, weathering

Answer explanation

The correct order is weathering, erosion, and then deposition. Weathering breaks down rocks, erosion transports the materials, and deposition occurs when these materials settle in a new location.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-1