Soil

Soil is made of

• weathered rocks and minerals

• dead plants and animals

• air and water

• all of the above

Soil formation begins with the weathering of_______.

• Humas

• Subsoil

• Litter

• Bedock

What is a soil problem all farmers face?

• soil hardening

• soil erosion

• soil spoiling

• soil pollution

Which soil component makes up about 5% of a loamy soil?

• Water

• Organic Matter

• Air

• Minerals

Which soil component makes up about 45% of a loamy soil?

• Water

• Organic Matter

• Air

• Minerals

Which soil component makes up about 25% of a loamy soil?

• Water

• Organic Matter

• Air

• Water & Air

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

• Music

• Climate

• Size of rock

• Weight of rock

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

Soil erosion is the process by which the

• the land surface(top soil) is removed by wind, water or ice

• formation of soil form rocks

• rusting of soil

• None of the above

Which of the following is the correct order of soil particles in order of increasing particle size?

• clay-sand-silt

• sand-clay-silt

• silt-clay-sand

• clay-silt-sand