Soil

What is humus?

• organic material rich in nutrients

• subsoil

• parent material

• trees

Tags

NGSS.MS-LS1-5

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.MS-LS2-3

NGSS.MS-LS2-1

Which soil is the best for growing plants?

• clay

• silt-sand

• sand

• silt

Tags

NGSS.MS-LS1-5

Which property of soil are students trying to match?

• color

• texture

• size

• shape

Why does a soil that has only sand and gravel not support plant growth well?

• It holds in too much water

• it holds in too little water

• it has too many decomposers

• it has too many minerals

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is loam?

• an even mixture of sand, silt, and clay

• soil made of mostly sand

• soil made of mostly clay

• a mixture of gravel and sand

If 100 mL is poured through each weathered rock, which retained the most water?

• clay

• gravel

• sand

• silt

When testing the soil texture of each soil sample, what is the next step after wetting each sample?

• rub the sample between your fingers

• plant a flower in each sample

• examine each sample with a hand lens

• look at the color of each sample

Soil takes very little time to form.

• True

• False

Soil is made up of

• weathered rock, air, water, and organic matter

• gravel, air, water, and clay

• clay, organic matter, and air

Tags

NGSS.MS-LS2-3