Layers of Soil

A quarter of our planet’s biodiversity is made up of (a)   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 (a)   Horizon.

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