Soil Review

The four types of soil are:

• humus, gravel, pebbles, sand

• sand, silt, clay, loam

• sand, rock, pebbles, granite

The largest size particles in soil are

• clay

• silt

• sand

The soil type with the smallest particles is

• clay

• sand

• gravel

Plants need what in order to survive?

• clay and pebbles

• air and water

• gravel and sand

No water stays in this when poured through

• loam

• clay

• gravel

Which soil type is sticky when wet?

• clay

• sand

• silt

Loam is a mix of clay, silt, and sand

• True

• False

What physical property of soil determines if it retains water?

• color

• particle size

• smell

It is important for soil to retain water to

• withstand weathering

• erode more slowly

• help plants to grow

Clay most often

• retains the most water

• retains the least amount of water

• retains no water