Soil Horizons (Grade 5)
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Soil Horizons
1.
Bedrock can be found in the A horizon.
- True
- False
2.
The B horizon is called the topsoil.
- True
- False
3.
The A horizon is made up of minerals and humus which contain nutrients that feed plants.
- True
- False
4.
Most plant roots grow in the C horizon.
- True
- False
5.
is the loose covering of weathered rock particles and decaying organic matter overlying the bedrock of Earth's surface.
- Humus
- Compost
- Sediment
- Soil
6.
The five factors that determine how soils develop are
- parent material, climate, vegetation, landscape, and time.
- animals, humus, weather, leaching, and volcanoes.
- sunlight, animals, humus, leaching, and earthquakes.
7.
In which horizon of a soil profile is the parent material usually found?
- D
- B
- C
- A
8.
In which horizon of a soil profile does leaching normally occur?
- Horizon A
- Horizon D
- Horizon B
- Horizon C
9.
What is the C horizon?
10.
Describe the major characteristics of the R soil horizon.
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