Soil

1. The four types of soil are:

• humus, gravel, pebbles, sand

• sand, silt, clay, marl

• sand, rock, pebbles, granite

2. The largest size particles in soil are:

• clay

• silt

• sand

3. The soil type with the smallest particles is:

• clay

• sand

• gravel

4. Plants need what in order to survive?

• clay and pebbles

• air and water

• gravel and sand

5. No water stays in this when poured through:

• clay and pebbles

• air and water

• gravel and sand

5. No water stays in this when poured through:

• loam

• clay

• gravel

6. Which soil type is sticky when wet?

• clay

• sand

• silt

Loam is a mix of clay silt and sand

• True

• False

8. What physical property of soil determines if it retains water?

• color

• particle size

• texture

9. It is important for soil to retain water to:

• withstand weathering

• erode more slowly

• help plants grow