Soil

Soil is broken down pieces of...

• animal bones
• rocks
• mountains
• plants

Soil is made up of mineral matter, organic matter, air and water. What percent of soil is the largest?

• Mineral matter
• Organic matter
• Air 
• Water

Which of these is not organic?

• Rock
• Leaves
• Worm
• Grass

Which soil layer would you expect to find the largest rocks in?

• Topsoil
• Subsoil
• Bedrock

In which soil layer do plants grow?

• bedrock
• subsoil
• topsoil
• parent material

Water flows right through this type of soil

• Sand

• Silt

• Clay

• Loam

Which type of soil is the best for growing plants?

• Sand
• Silt
• Clay
• Loam

Which soil has the largest particles?

• silt
• sand
• clay

Water does not pass through this type of soil so plants do not grow well in this soil

• clay
• sand
• silt
• loam

Which is not an example of mechanical or physical weathering?

• water freezing and expanding in a rock

• water hitting rocks against each other

• minerals in the soil changing the color of the soil

• tree roots pushing up through the surface