SOIL Check 2021

What is the top horizon/layer of soil?

• Loam

• Topsoil

• Humus

• Clay

What is weathering?

• A process that breaks down rocks into smaller pieces

• A change in the weather

• How plants are put into the ground

• What causes the seasons to change

Soil is formed by . . .

• weathering

• the water cycle

• animals

• humans

Decomposition is important to soil because...

• it's not important

• it provides the nutrients soil needs

• animals like to eat it

• all of the above

Which type of soil has the most bits of dead plants and animals?

• Humus

• Sand

• Clay

The soil that has the smallest particle size is

• clay

• sand

• silt

Texture is the way an object

• tastes

• looks

• feels

Which layer of soil is on the bottom?

• topsoil
• subsoil
• bedrock
• bottomsoil

Soil is made of

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

The texture of soil depends on

• How much water it can retain

• Particle size

• Soil color

• Soil mass