Soil Formation Lesson

Soil that is not covered with plants can be easily ________ by wind and water

• eroded

• conserved

• examined

• mixed

As plants and other organisms die and decompose, their remains change to a dark organic material called _________.

• matter

• soil

• humus

• particles

Tags

NGSS.MS-LS2-3

Select two reasons why soil is important.

• Soil is a mixture of different things.

• Virtually all of our food supply depends on soil.

• The organic matter consists of the decayed remains of organisms, including plants and animals.

• Soil contains the food, air, and water that plants need to grow.

Tags

NGSS.MS-LS2-3

What is something that people who work with soil can do to maintain soil quality

• We can *not* plant on soil.

• We can put lots of chemicals on it.

• We can grow the same crops every year in the same area.

• We can also be careful about what chemicals we put on it.

Tags

NGSS.MS-LS2-4

Where is chemical weathering most effective?

• hot, dry climates

• hot, wet climates

• cold, wet climates

• cold, dry climates

IDENTIFY 4

• Bedrock

• c horizon

• b horizon

• a horizon

Tags

NGSS.MS-LS2-3

soil is made of

• decaying organic material

• rock particles

• minerals

• water

• air

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-1

this is decaying organic matter.

• humus

• sand

• loam

• bedrock

• topsoil

Tags

NGSS.MS-LS2-3

This is a relatively big soil particle

• humus

• sand

• loam

• bedrock

• topsoil

when soil is made of equal parts of sand, silt and clay it is called

• humus

• sand

• loam

• bedrock

• topsoil