Soil and Soil Layers

Soil is made of

• weathered rocks and minerals
• dead plants and animals
• air and water
• all of the above

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Why is soil an important natural resource?

• soil is used to make buildings
• soil can grow crops
• soil comes from bedrock
• soil is full of mircobes

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What is HUMUS made from?

• Chick-Peas
• The remains of decayed plants and animals
• Beans
• Cheese

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Which layer is the bottom of the soil profile?

• C - Partially Weathered Parent Material
• D - Separated rock
• R - Bedrock
• A - Topsoil

Which layer of soil are these roots growing in?

• subsoil
• topsoil
• bedrock

Humus is important because...

• It contains toxic waste
• It contains acids and bases
• It breaks down rocks
• It helps plants grow

Tags

NGSS.MS-LS1-5

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Soil is made up of

• water, dirt, worms, and banana peels

• minerals, air, water, and organic material

• air, worms, plants, and headphones

• water, worms, walnuts, and watermelons

Soil is necessary to many different things. Which sentence correctly matches a necessity with a living organism?

• Soil is food for plants.

• Soil is a playground for animals.

• Soil is mud for pigs.

• Soil is a mess for moms.

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What is the first step in soil formation?

• rock breaks into tiny pieces

• organic matter mixes with inorganic matter

• worms dig holes in soil

• it begins to rain on soil

In which layer of soil do plant roots grow?

• humus

• topsoil

• subsoil

• bedrock

Tags

NGSS.MS-LS1-5