Soil Jeopardy - 3rd Grade

Layers of the Soil

100

This is the very top layer of soil.

What is Humus.

200

This is the bottom layer of soil.

What is bedrock.

300

This is the middle layer of soil.

What is subsoil.

400

This layer contains the most nutrients and is a dark brown color.

What is topsoil.

Components of Soil

100

This is decayed matter in soil. It adds nutruents to the soil and is located in the topsoil.

What is humus.

200

This is made up of small grains of worn-down rock, has few nutruents, and does not hold water well.

What is sand.

300

This contains tiny particles of soil that hold water well and provides nutrients.

What is clay.

400

This is made up of very small broken pieces of rock. Its particles are larger than clay and smaller than sand.

What is silt.

Weathering & Erosion

100

Erosion is when rocks and soil are moved by what two things?

What is wind and water.

200

Weathering occurs over a short amount of time or long?

What is long amount of time.

300

What is the term for when weather, water, and living organisms help break down rocks and create soil?

What is weathering.

400

Give an example of weathering or erosion

.... answers may vary ....