Exploring the Layers of Soil

What is the top layer of soil called?

• Subsoil

• Topsoil

• Clay

• Bedrock

Name one type of soil found in the top layer.

• Sandstone

• Topsoil

• Clay

• Silt

What is the layer below the topsoil called?

• Bedrock

• Topsoil

• Subsoil

• Clay

What is subsoil mainly made of?

• Minerals, organic matter, water, and air

• Clay and sand

• Only water and air

• Organic waste and rocks

Which layer contains the bedrock?

• Outer core

• Crust

• Mantle

• Inner core

What is the importance of topsoil for plants?

• Topsoil is only important for preventing erosion.

• Topsoil has no impact on plant growth or health.

• Topsoil is primarily used for decoration in gardens.

• Topsoil is important for plants because it provides essential nutrients, supports root growth, and retains moisture.

How does water affect the soil layers?

• Water impacts soil layers by altering their structure, causing erosion, and affecting nutrient availability.

• Water only increases soil temperature.

• Water has no effect on soil layers.

• Water makes soil layers more compact.

What type of organisms can be found in soil?

• Rocks, minerals, and metals

• Bacteria, fungi, protozoa, nematodes, earthworms, and insects.

• Fish, birds, and mammals

• Trees, shrubs, and grasses

Why is it important to protect soil?

• To increase soil erosion

• To promote urban development

• To reduce biodiversity

• It is important to protect soil to ensure food security, maintain ecosystem health, and mitigate climate change.

What can happen if soil is not taken care of?

• Increased water retention in the soil.

• Improved soil structure and aeration.

• Soil degradation and loss of productivity.

• Enhanced nutrient availability for plants.