Layers of Soil

A quarter of our planet’s biodiversity is made up of __________ living in the ground.

What percentage of soil is made up of minerals like sand, silt, and clay?

• 10%

• 45%

• 75%

• 90%

True or False: Clay particles are the largest particles found in soil.

• True

• False

Which particle will always settle at the bottom of a soil sample because it’s the heaviest?

• Clay

• Silt

• Sand

• Organic Matter

True or False: Water is important for soil because it helps move nutrients to plant roots.

• True

• False

• I really don't care if I get it right or not.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The top layer of soil, which is rich in organic material and plant roots, is called the __________ Horizon.

The layer just above the bedrock, made up of partially broken rock, is known as the __________ Horizon.