Soil review

Which of the following is not part of soil?

• minerals

• organic matter

• air

• erosion

Soil composed of mixture of sand, clay, silt and humus.

• loam

• peat

• bedrock

• soil profile

Soil is made up of ______ air.

• 10%

• 25%

• 50%

• 5%

Soil is made up of ______ organic matter

• 10%

• 25%

• 50%

• 5%

______ is the amount of salt in a solution

• pH

• salinity

• erosion

• organic matter

Which of the soil particles has the biggest size?

• silt

• clay

• sand

• humus

There are _____ horizon on the soil layers.

• 3

• 4

• 5

• 6

The formation of soil can take up to ________ years or more.

• 100

• 1,000

• 10,000

• 100,000

Which one is the most common use of soil?

• Farming and Gardening

• Waste management

• Fuel resource

• House and building

Peat is used for _________.

• Farming and Gardening

• Waste management

• Fuel resource

• House and building