Chapter 4 Test Practice

The term "onion‐skin weathering" refers to layers or sheets of rock that gradually break off. This action is commonly called

• abrasion
• vegetation
• peeling
• exfoliation

Plant roots cause mechanical weathering by

• breaking apart a rock
• changing a rock's composition
• wearing down a rock by friction
• causing thin layers to break off

Iron‐containing minerals in rocks may combine with water and air to create rust. This is an example of

• chemical weathering
• mechanical weathering
• abrasion
• exfoliation

Tags

NGSS.MS-PS1-2

Which of the following cause mechanical weathering?

• ice and moving water
• moving water and desertification
• desertification and dissolving
• dissolving and ice

The soil that forms on a mountain slope is often

• darkly colored
• formed quickly
• poorly developed
• mostly humus

A location that supports a lot of plant and animal life will likely have a soil profile with

• a thick A horizon
• no A horizon
• a thick C horizon
• no C horizon

Tags

NGSS.MS-LS1-5

Chemical weathering changes rock through

• physical forces that break rock down
• reactions that change the rock's composition
• abrasion that wears rocks down
• exfoliation that causes flaking

Tags

NGSS.MS-PS1-2

The cold, dry climate of the Arctic results in slow chemical weathering. Arctic soils tend to

• be dark brown or black
• be thin and have many rock fragments
• be high in humus content
• have large A horizons

Tags

NGSS.MS-LS1-5

Which amount of pore space in your soil might you want for your garden?

• 5 percent pore space by volume
• 10 percent pore space by volume
• 50 percent pore space by volume
• almost 100 percent pore space by volume

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

All of the particles in your soil sample are large enough to see without a microscope. These particles are classified as

• water
• silt
• sand
• clay