Soil Definitions Quiz

Write the word next to the definition: The topmost layer of soil.

Write the word next to the definition: It is made of solid rock.

Write the word next to the definition: Made mostly of minerals.

Write the word next to the definition: A combination of sand, silt, and clay.

The breaking down of rocks into smaller pieces is called—

• decomposition.

• remains.

• weathering.

• humus.

Which part of the soil is a mixture composed of decaying organisms?

• Sand

• Silt

• Clay

• Humus

Clay, sand, silt, and gravel particles are different sizes. Which particle is the smallest?

• Clay

• Sand

• Silt

• Gravel

Which 2 processes are necessary for soil to form?

• Evaporation and condensation

• Weathering and eruption

• Decomposition and weathering

• Humus and sand