Soil Review

Soil is an important natural resource for ______________.

• Plants

• Animals

• People

• All of the above

Rocks and minerals are the parent materials of soil.

• True

• False

Which processes create soil?

• Heat and pressure

• Weathering and erosion

• Oil and eggs

• Wind and ice

A rock is an organic material.

• True

• False

What percentage of soil is water?

• 25%

• 45%

• 5%

• 10%

What percentage of soil is air?

• 25%

• 45%

• 5%

• 10%

What percentage of soil is organic material?

• 25%

• 45%

• 5%

• 10%

What percentage of soil is minerals?

• 25%

• 45%

• 5%

• 10%

Which type of soil has the largest particles and roughest texture?

• Sand

• Silt

• Clay

• Bedrock

Which type of soil has the smallest particles and smoothest texture?

• Clay

• Sand

• Silt

• Bedrock