Soil

Which soil has the smallest rock particles?

• loam

• silt

• sand

• clay

Which soil do plants grow best in?

• clay

• loam

• silt

• sand

What is a major cause of soil erosion?

• running water

• overgrazing

• farming

• construction

Wind blowing from one location to another creates

• deposition

• weathering

• settling

• soil erosion

How does wind weather a rock?

• wind slowly drills a hole in the side of a rock

• wind shakes a large rock and makes it weak

• wind smashes big rocks against each other

• wind blows tiny pieces of rock against a larger rock and tiny pieces break off

What happens to soil if no plants are in it when it rains?

• soil erosion

• soil becomes mud

• soil absorbs the water

• soil becomes sand

Which soil conservation method involves planting a crop specifically to protect the soil from erosion?

• conservation tillage

• cover crop

• no-till farming

• deep plowing

What area of the US was affected by many droughts during the 1930's?

• southern states

• California

• Great Plains

• Texas

Human influences on the rate of erosion does not include ?

• recycling

• logging

• farming

• construction

Which is not physical weathering?

• abrasion

• ice wedging

• rusting

• thermal expansion