Layers of the Soil
This is the very top layer of soil.
What is topsoil?
This is decayed matter in soil. It adds nutrients to the soil and is located in the topsoil.
What is humus?
Erosion is when rocks and soil are moved by these two things.
What are wind and water?
These are materials that plants and animals need to live and grow.
What are nutrients?
This is the bottom layer of soil.
What is bedrock?
This is made up of small grains of worn-down rock, has few nutrients, and does not hold water well.
What is sand?
This is how long weathering takes.
What is long amount of time.
Topsoil provides this for organisms such as worms.
What is habitat?
This is the middle layer of soil.
What is subsoil?
This contains tiny particles of soil that you can't see without a microscope.
What is clay?
The term for when weather, water, and living organisms like trees break down rocks and create soil
What is weathering?
This type of soil can look chunky because it's made up of sand, silt, clay and humus.
What is loam?
This layer contains the most nutrients and is a dark brown color.
What is topsoil/humus?
This is made up of very small broken pieces of rock. Its particles are larger than clay and smaller than sand. It looks cloudy in lakes and rivers.
What is silt?
An example of weathering and erosion
.... answers may vary ....
These are the four components of soil.
What are rock, humus, air, and water.