3rd Grade Soil Review

What is the top layer of soil is called?

• topsoil
• silt
• sand
• layer

Soil with the tiniest pieces (grains) of rocks is .....

• sand
• silt
• clay
• humus

Part of the soil made up of dead plants and animals is called......

• sand
• silt
• loam
• humus

The layer under the topsoil is called.....

• bedrock
• subsoil
• topsoil
• humus

To look at, watch, or study closely...

• erosion
• observe
• silt
• weathering

The breaking down of rocks into small pieces by wind and water.....

• soil
• weathering
• silt
• humus

Just below the fragmented rock is the __________ layer

• loam
• topsoil
• bedrock
• subsoil

What contains water, air, humus, and tiny pieces of rock?

• soil
• minerals
• rocks
• toys

This soil is coarse, with large grains, and drains quickly.

• humus
• loam
• sand
• clay

This soil is a mixture of humus, sand, silt, and clay.

• loam
• clay
• bedrock
• subsoil