Soil Review 3rd Grade

Front

What is topsoil?

Back

The closest layer to the ground we walk on.

Front

What is erosion?

Back

When wind, water, and weather change a natural substance over time.

Front

Why is soil important for plant growth?

Back

It contains nutrients to help plants grow.

Front

What creature is commonly found in humus?

Back

Earthworms.

Front

Why is it important to protect topsoil?

Back

It grows plants and food.

Front

What is humus?

Back

A rich organic material in soil that contains nutrients.

Front

What are the three main layers of soil?

Back

Topsoil, subsoil, and bedrock.

Front

What does soil provide for plants?

Back

Nutrients, water, and support for roots.

Front

What can cause soil erosion?

Back

Wind, water, and human activities.

Front

How can we prevent soil erosion?

Back

By planting trees, using cover crops, and building terraces.