Soil Learning Quiz

What is soil primarily composed of?

• Only rocks

• Water and air

• Just organic matter

• Tiny pieces of rocks, nutrients, and organic matter

Which type of soil is known for having the largest particles?

• Silt

• Clay

• Sand

• Loam

Which soil type holds water the best?

• Loam

• Clay

• Silt

• Sand

What is the first step in the process of soil formation?

• Addition of organic material

• Mixing by small animals

• Weathering of rocks

• Water movement

How do small animals contribute to soil formation?

• By breaking down rocks

• By mixing organic material with rock pieces

• By adding nutrients

• By holding water

Which soil horizon is rich in organic material and nutrients?

• B Horizon

• A Horizon

• C Horizon

• O Horizon

What is the main characteristic of the E Horizon?

• It is rich in organic material

• It is dark and nutrient-rich

• It is made of solid rock

• It is lighter in color due to leaching

Which layer is known as the subsoil?

• A Horizon

• B Horizon

• C Horizon

• O Horizon

Why is soil important for plants?

• It provides sunlight

• It offers nutrients and support

• It keeps them warm

• It protects them from wind

What role does soil play for small animals and microorganisms?

• It offers a place to fly

• It acts as a shelter

• It gives them water

• It provides sunlight