Intro to Soil

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

• topsoil
• undersoil
• subsoil
• bedrock

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-LS2-1

NGSS.MS-LS2-3

Which of the following is the largest particle in soil?

• sand
• silt
• humus
• clay

Soil is made of

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

Tags

NGSS.MS-LS2-3

What is the layer of soil just below the topsoil?

• soil
• subsoil
• topsoil
• terrace farming

The texture of soil depends mainly on

• the types of plants that grow in the soil.
• the size of the particles in the soil.
• the color of the soil.
• the number of worms in the soil.

THIS HORIZON IS MADE OF DECAYING LEAVES, TWIGS AND ANIMAL REMAINS/WASTES......

• A
• B
• C
• O

Tags

NGSS.MS-LS2-3

Which layer of soil has low organic material and has clay in the form of aluminum and iron compounds?

• Topsoil

• Bedrock

• Subsoil

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

• Topsoil

• Subsoil

• Bedrock

What is a vertical cross section of the soil?

• soil erosion
• soil profile
• soil structure
• soil texture