Weathering, Erosion, and Soil

What is HUMUS made from?

• Chick-Peas
• The remains of decayed plants and animals
• Beans
• Cheese

Tags

NGSS.MS-LS2-3

Are there minerals in soil?

• Yes

• No

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS3-1

When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?

• sand
• silt
• clay
• humus

Tags

NGSS.MS-LS2-3

Which layer is the bottom of the soil profile?

• C - Partially Weathered Parent Material
• D - Separated rock
• R - Bedrock
• A - Topsoil

Tags

NGSS.MS-ESS2-1

Many plants cannot grow in sandy soil. Why is this true?

• Sandy soil does not hold enough water.
• Oxygen cannot pass through sandy soil.
• Roots cannot easily push through clay soil.
• Sandy soil has too many nutrients.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Soil is made of

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

Tags

NGSS.MS-ESS2-1

Which layer of soil are these roots growing in?

• subsoil
• topsoil

Tags

NGSS.MS-LS1-5

Humus is important because...

• It contains toxic waste
• It contains acids and bases
• It breaks down rocks
• It helps plants grow

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

Soil is composed of all of these natural materials EXCEPT

• weathered rock

• plant matter

• plastic substances

• animal remains

Tags

NGSS.MS-PS1-3

Rocks near the ocean get broken into smaller pieces. What causes this change to these rocks?

• Leaves falling from trees

• Clouds forming in the sky

• Water crashing against the rocks

• Salt dissolving in the water

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4