Soil

Which of the following is NOT a type of soil?

• minerals

• sand

• silk

• clay

The top layer of soil is called ________.

• bedrock

• subsoil

• topsoil

• humus

This type of soil is best for plant growth.

• clay

• sand

• loam

• rock

The four types of soil are _____.

• sand, rock, pebbles, granite

• sand, clay, bedrock, topsoil

• sand, silt, clay, loam

• humus, gravel, pebbles, sand

This is found in the topsoil and is made of decaying plants and animals.

• humus

• dirt

• water

• subsoil

What is the fourth layer of soil?

• humus

• bedrock

• subsoil

• parent material

True or False: Soil takes very little time to form.

• True

• False

There is air in soil.

• True

• False