Soil Review

What is soil made up of?

• Just decomposed organic material

• Just weathered rocks

• Weathered rock and decomposed organic material

• Just dead plants

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

What is decomposed organic material?

• Broken down remains of plants and animals (humus).

• Plants and animals that are still alive.

• Anything in the grocery store that's healthy.

• Broken down rocks and minerals.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What's a synonym for decomposed organic material?

• Dirt

• Soil

• Humus

• Mineral

Tags

NGSS.MS-LS2-3

Which layer contains the most decomposed organic material (humus) and the smallest rocks?

• Bedrock

• Subsoil (Horizon B)

• Topsoil (Horizon A)

• Horizon C

Tags

NGSS.MS-LS2-3

Which layer contains a little decomposed organic material (humus) from leaching and medium-sized rocks?

• Bedrock

• Subsoil (Horizon B)

• Topsoil (Horizon A)

• Horizon C

Which layer is made up of SOLID ROCK and no humus?

• Bedrock

• Subsoil (Horizon B)

• Topsoil (Horizon A)

What else is in soil besides weathered rock and decomposed organic material?

• Water

• Air

• Living organisms (worms, bugs, etc.)

• All of the above

Tags

NGSS.MS-LS2-3

What happens to plants soon after they die?

• They become fossils.

• They break down and become part of the soil.

• They turn into mold.

• They turn into coal.

Tags

NGSS.MS-LS2-3

What layer is at the top and is made up of JUST humus?

• Topsoil

• Organic Layer

• Subsoil

• Bedrock

Tags

NGSS.MS-ESS2-2