Soil Components
Composting
How Water Affects Soil
Living Things in Soil
Nonliving Things in Soil
100

What is soil mostly made of?

tiny bits of rocks

100

What do we call the process of turning kitchen scraps into soil?

composting

100

What happens to dry soil when you add water?

It becomes wet or muddy

100

Name a common worm that lives in soil.

Earthworm

100

Name a type of rock found in soil.

sand, gravel

200

Which soil component helps plants grow by providing nutrients?

humus

200

Name one food item that’s good for composting.

Fruit peels

200

Which type of soil dries out quickly, sand or clay?

sand

200

Which small insect, often called a “bug,” helps break down dead plants in soil?

Beetles

200

True or False: Air can be found in soil.

True

300

Which soil layer is best for growing plants?

Topsoil

300

True or False: Plastic can go into a compost pile

False

300

When soil gets too much water, what happens to the plants?

They can drown or die.

300

What tiny living things help decompose materials in the soil?

Fungi and bacteria

300

What nonliving thing in soil helps plants get water and nutrients

minerals

400

What component in soil helps it hold water?

Clay

400

What tiny organisms help break down materials in a compost pile?

Bacteria

400

What do we call the spaces in soil that hold water?

Holes, pores

400

Name a small animal that burrows in the soil and helps mix it up.

mole

400

What do we call the pieces of old plants and animals that are no longer alive, but still in soil?

organic matter

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