Soil

Which of the following best describes soil erosion?

• A.  the breakdown of soil 
• A.  the improvement of soil
• A.  the addition of soil
• A.  the movement of soil by wind or water

Tags

NGSS.MS-ESS2-2

Soil is made of

• weathered rocks and minerals
• dead plants and animals
• air and water
• all of the above

Tags

NGSS.MS-LS2-1

Which layer of soil are these roots growing in?

• subsoil
• topsoil

The breaking down of rocks into smaller pieces.

• erosion
• weathering
• sediment
• sand

Humus is.....

• the dead parts of plants and animals in soil.
• A food we eat with pretzels.
• The tiny particles inside of soil
• The roots that come off of a plant and live in soil.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which is NOT a layer of soil?

• bedrock
• topsoil
• undersoil
• subsoil

What do we call the layers of soil?

• Deposits
• Horizons
• Minerals
• Rocks

All of the layers of soil together can be called a _________.

• profile

• horizon

• row

• layer

Which horizon is also called "topsoil"?

• Horizon O

• Horizon A

• Horizon B

• Horizon C

How does soil form?

• Soil forms as rock is broken down by weathering and mixed with other materials on the surface.
• Soil forms when someone takes a shovel and breaks rocks, and then mixes it with dirt.
• Soil forms when an you throw rocks and dirt into a pond.
• Soil forms when you mix water and rocks together, then add air.

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS2-1