Formation of Soil

Which of the following is NOT one of the three layers of soil?

• topsoil
• undersoil
• subsoil
• bedrock

Tags

NGSS.MS-ESS2-1

Humus is.....

• the dead parts of plants and animals in soil.
• A food we eat with pretzels.
• The tiny particles inside of soil
• The roots that come off of a plant and live in soil.

Tags

NGSS.MS-LS2-3

When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?

• sand
• silt
• clay
• humus

Tags

NGSS.MS-LS2-3

Soil is made of

• weathered rocks and minerals
• dead plants and animals
• air and water
• all of the above

Tags

NGSS.MS-ESS2-1

The breaking down of rocks into smaller pieces.

• erosion
• weathering
• sediment
• sand

Tags

NGSS.MS-ESS2-2

The movement of weathered rock and soil

• weathering
• erosion
• sand
• silt

Which of the following best describes soil erosion?

• A.  the breakdown of soil 
• A.  the improvement of soil
• A.  the addition of soil
• A.  the movement of soil by wind or water

Tags

NGSS.4-ESS2-1

Water gets into the cracks of rock and freezes, causing the rock to break.  What is this an example of?

• erosion
• weathering

Tags

NGSS.MS-ESS2-2

Find the word that best describes the following:

To break down or decay living things

• Plant matter

• Weathering

• Decompose

• Trees

Soil formation begins with the weathering of_______.

• Humus
• Subsoil
• Litter
• Rock

Tags

NGSS.MS-ESS2-2