Soil Review!

Soil is made of:

• pieces of rock

• air and water

• matter that was once alive

• all of the above

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which layer of soil contains lots of roots and minerals for growing plants?

• Topsoil

• Subsoil

• Bedrock

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NGSS.MS-LS1-5

NGSS.MS-LS2-1

What is HUMUS made from?

• The remains of decayed plants.

• Both

• The remains of decayed animals.

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NGSS.MS-LS2-1

The light colored, leached horizon.

• A Horizon

• O Horizon

• Bedrock

• E Horizon

Layers of soil are also known as:

• Soil Profiles
• Soil Horizons
• Soil sheets
• Soil cores

Soil formation begins with the weathering of 

• litter.
• bedrock.
• the A horizon.
• humus.

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NGSS.MS-ESS2-2

Which of the horizons in the soil profile shown represent the organic material?

• Horizon O (Humus)
• Horizon A
• Horizon B
• Horizon C

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NGSS.MS-LS2-3

In which horizon do most animals such as bugs live?

• Humus

• Topsoil

• Subsoil

• Parent Material

• Bedrock

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NGSS.MS-LS2-4

It can take a long time for soil to form. Which are the primary factors that affect soil formation?

• rainfall, temperature, wind, time, and plants

• time, climate, topography, plants, and animals

• parent rock, sunshine, plants, animals, and bacteria

• climate, parent rock, topography, living things, and time

How does soil form?

• Soil forms as rock is broken down by weathering and mixed with other materials on the surface.
• Soil forms when someone takes a shovel and breaks rocks, and then mixes it with dirt.
• Soil forms when an you throw rocks and dirt into a pond.
• Soil forms when you mix water and rocks together, then add air.

Tags

NGSS.MS-ESS2-1