Soil Formation Quiz

Soil is formed from which of the following substances?

• I. Remains of dead plants

• II. Remains of dead animals

• III. Tiny pieces of rock

• IV. Large pieces of rock

The image below shows a sample of soil. Which of the following statements correctly describes the relationship between large rocks and soil?

• Soil builds up into small rocks through sedimentation, then those smaller rocks build up into large rocks.

• Large rocks break down into smaller rocks through weathering and erosion which break them down even further into the tiny pieces of rock found in soil.

• Soil builds up into small rocks through weathering and erosion, then those smaller rocks build up into large rocks.

• Large rocks break down into smaller rocks through sedimentation which break them down even further into the tiny pieces of rock found in soil.

Which of the following shows the steps of soil formation in correct order?

• J

• K

• L

• M

Look at the two samples below. Claudio knows that one of the two substances is soil. Sample A is most likely soil because it is dark and does not contain large rocks. Sample B is most likely soil because it contains multiple substances including large rocks.

The diagram below shows the layers of soil. Which layer would most likely contain decomposing organic material such as dead animals and plants?

• Layer 1

• Layer 3

• Layer 4

• Layer 5

Which layer of soil are these roots growing in?

¿en qué capa de tierra están creciendo estas raíces?

• subsoil

  subsuelo

• topsoil

  la capa superior del suelo

Which layer is the bottom of the soil profile?

¿qué capa es la parte inferior del perfil del suelo?

• Partially Weathered Parent Material

  Material del padre parcialmente resistido

• Separated rock

  Roca separada

• Bedrock

  el lecho de roca

• Topsoil

  la capa superior del suelo

Como es importante el suelo para organismsos vivos

• Es nutriente para las plantas

• Es donde algunos organismos tienen su habitat

• Todos los anteriores