3rd Grade soil

This is a layer of loose material that covers Earth's land.

• soil
• rock
• water
• atmosphere

Soil has ___________ that plants need to grow.

• dirt
• sunlight
• materials

Soil contains tiny particles of rock, air, water and_________.

• sunlight
• humus
• rivers

This is remains of plants and animals that were once alive.

• rocks
• water
• air
• humus

As plant and animal remains decay, or rot, __________ are released.

• Nutrients
• water
• air
• soil

Substances that living things need for energy and growth.

• air
• nutrients
• rocks
• rivers

Any process that breaks down rocks

• erosion
• deposition
• weathering

How many layers does soil have?

• 3
• 4
• 2
• 1

What is the top layer of soil called?

• subsoil
• topsoil
• bedrock
• dirt

What layer of soil lies right under the topsoil?

• topsoil
• bedrock
• subsoil
• dirt