Soil - Science 3.7

What is the name of the TOP layer of soil, where plants and nutrients are found?

• bedrock

• silt

• topsoil

• subsoil

Choose all correct answers.

Soil

• is a mixture of tiny rock particles.

• is minerals from decayed plants and animals.

• kills living things.

• provides nutrients to plants.

• is always brown.

Tags

NGSS.MS-LS2-1

Things people use that come from the Earth are called

• nutrients

• humus

• natural resources

• bedrock

Tags

NGSS.MS-PS1-3

To slowly break down and rot is called

• subsoil

• erosion

• humus

• decay

Tags

NGSS.MS-LS2-3

Choose all correct answers.

Weathering is when

• rocks break down or break apart.

• the ocean water comes in for high tide.

• tree roots cause cracks.

• ice and water break apart pavement.

Tags

NGSS.MS-ESS2-2

The movement of soil and rock by wind and water is called

• humus

• decay

• erosion

• natural resources

Tags

NGSS.4-ESS2-1

Humus is

• decayed matter in soil

• silt

• clay

• bedrock

Loose soil with large grains and does not hold water well is called

• dirty soil

• silt

• clay

• sandy soil

Silt is soil made of

• boulders

• tiny rocks

• beach sand

• large rocks

Silt is easily carried by water and is very loose and powder like.

• True

• False