Soil

What does soil consist of? (you can mark more than one)

• rocks

• sand and clay

• animal remains

• dead plants

• Fungi

What is humus?

• organic material rich in nutrients
• subsoil
• parent material
• trees

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Why is soil an important natural resource?

• soil is used to make buildings
• soil can grow crops
• soil comes from bedrock
• soil is full of mircobes

Tags

NGSS.5-ESS3-1

NGSS.5-LS2-1

Subsoil is made mostly of

• parent material
• humus
• clay and silt
• bedrock

Which describes the soil layers in order from the surface?

• top soil, bedrock, Humus, horizon C, subsoil

• Humus, top soil, subsoil, Parent Material, bedrock

• top soil, Parent Material, subsoil, bedrock, Humus

What process breaks down bedrock to begin soil formation?

• leaching
• weathering
• decomposition
• humus

Which of the following is NOT one of the three types of soil?

• clay
• sand
• silt
• mud

Tags

NGSS.MS-ESS2-1

_______ is the type of soil used most often with plants and on farms. It is a mixture of clay, sand, and silt.

• loam
• humus
• soil
• dirt

Tags

NGSS.MS-LS2-3

Are there minerals in soil?

• Yes
• No

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS3-1

Ellen grabs a topsoil sample in her hand. She rolls it into a ball. The soil feels gritty and the ball falls apart. What part of the topsoil most likely made the topsoil feel gritty?

• clay
• sand
• silt
• humus

Tags

NGSS.5-PS1-3