Soil Formation

Which layer of soil is on bottom?

• Topsoil
• Sand
• Bedrock

There are FOUR components of soil: water, air, organic material, and ________.

• conservation
• rock
• subsoil
• loamy

Fertile soil is rich in _________.

• Conservation
• Bedrock
• Water
• Nutrients

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-3

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

Soil is made of

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

Tags

NGSS.MS-ESS2-1

_______ is the type of soil used most often with plants and on farms. It is a mixture of clay, sand, and silt.

• loam
• humus
• soil
• dirt

Tags

NGSS.MS-LS2-3

The top layer of soil is called ________.

• bedrock
• topsoil
• subsoil
• grass

This type of soil is sticky when wet and hard when dry. 

• clay
• silt
• sand
• gravel

Which layer of soil contains lots of roots and minerals for growing plants?

• Topsoil

• Humus

• Subsoil

• Bedrock

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

Physically breaking down rocks and materials is called__________weathering.

• Chemical
• Mechanical
• Biological
• Permeable