soil

Soil's one of the Earth’s most valuable resources. Everything on Earth depends on soil somehow.

• True
• False

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is humus?

• organic material rich in nutrients
• subsoil
• parent material
• trees

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What is the main purpose of microbes in the soil?

• to release the nutrients in rocks
• to cause disease
• to feed animals

Tags

NGSS.MS-LS2-1

Which describes the soil layers in order from the surface?

• top soil, bedrock, horizon C, subsoil
• top soil, subsoil, horizon C, bedrock
• top soil, horizon C, subsoil, bedrock

Which of the following soil types would contain the most nutrients?

• Soil with many large rock particles
• Soil with bedrock close to the surface
• soil that drains well through it
• soil with decomposed organic material

Tags

NGSS.MS-LS2-1

What process breaks down bedrock to begin soil formation?

• leaching
• weathering
• decomposition
• humus

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 layer of soil which the topsoil is found.

• Horizon A
• Horizon B
• Horizon C
• Horizon D or R

The two main factors that determine the rate of weathering are the TYPE of rock and_____.

• Music
• Climate
• Size of rock
• Weight of rock

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS2-5

Soil is formed by the breaking down of rocks by the action of wind, water and climate. This process is called

• Humification

• Weathering

• Soil erosion

• None of the above

Tags

NGSS.MS-ESS2-2