What is bedrock?

• The movement of weathered rock.
• The hardest and lowest layer of soil.
• Loose material that covers much of Earth's surface.

What is humus?

• The decayed remains of plants and animals.
• The loose material that covers much of Earth's surface.
• Something you eat! 

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which layer of soil do plants usually grow in?

• topsoil
• subsoil
• bedrock

Tags

NGSS.MS-LS2-1

What type of soil is made from a mixture of sand, silt, and clay?

• sand
• silt
• clay
• loam

Soils can be all different colors.

• True
• False

When soil is being formed, the first step is: 

• weathering of rock
• mixing with humus
• mixing with air and water

Soil takes many ________ to form.

• days
• months
• years

Why are nutrients good in the soil?

• they help the plants grow healthy
• they provide a place for the roots to grow
• they soak in all the water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Soil is good for all of the following EXCEPT:

• making a compost heap
• planting a garden
• providing food to people and animals
• making a computer work

Tags

NGSS.MS-LS2-3

The movement of weathered rock material from one place to another is?

• erosion
• weathering
• deposition
• soil