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- 1. Multiple Choice
Soil formation begins with the weathering of
litter
humus
bedrock
the A horizon
- 2. Multiple Choice
You would probably find the most decomposers in the soil layer called
topsoil
loam
litter
bedrock
- 3. Multiple Choice
Select the definition of soil
layers of soil with distinct physical properties in a soil profile
mixture of weathered rock, organic material, water, and air
decomposed organic matter
vertical section showing the soil horizons
- 4. Multiple Choice
Are there minerals in soil?YesNo - 5. Multiple ChoiceWhich of the following best describes soil erosion?A. the breakdown of soilA. the improvement of soilA. the addition of soilA. the movement of soil by wind or water
- 6. Multiple ChoiceSoil is made ofweathered rocks and mineralsdead plants and animalsair and waterall of the above
- 7. Multiple Choice
A single layer of soil is called a _______________.
profile
horizon
row
column
- 8. Multiple Choice
All of the layers of soil together can be called a _________.
profile
horizon
row
layer
- 9. Multiple Choice
This term describes decayed organic matter such as dead plants and animals
topsoil
subsoil
humus
soil
- 10. Multiple Choice
Which horizon is also called "topsoil"?
Horizon O
Horizon A
Horizon B
Horizon C
- 11. Multiple Choice
Which horizon is made of organic matter?
Horizon O
Horizon A
Horizon B
Horizon C
- 12. Multiple Choice
This layer is the 1st true layer of soil
Horizon O
Horizon A
Horizon B
Horizon C
- 13. Multiple Choice
This layer is also called "bedrock".
Horizon A
Horizon B
Horizon C
Horizon R
- 14. Multiple Choice
This is the final layer where plant roots are found...but only deep ones!
Horizon O
Horizon A
Horizon B
Horizon C
- 15. Multiple Choice
Soil is 45% what?
water
air
organic material
minerals
- 16. Multiple Choice
Ideal soil is comprised of 5% what?
air
water
organic material
minerals
- 17. Multiple Choice
Horizon B is also referred to by what term?
Topsoil
Bedrock
Supersoil
Subsoil
- 18. Multiple ChoiceHow does soil form?Soil forms as rock is broken down by weathering and mixed with other materials on the surface.Soil forms when someone takes a shovel and breaks rocks, and then mixes it with dirt.Soil forms when an you throw rocks and dirt into a pond.Soil forms when you mix water and rocks together, then add air.
- 19. Multiple ChoiceWhich layer of soil are these roots growing in?subsoiltopsoil
- 20. Multiple ChoiceWhat is the layer of soil that contains humus, leaf litter, and other organic matter?O - OrganicA - TopsoilB - SubsoilR - Bedrock
- 21. Multiple ChoiceWhy is topsoil darker than all other levels of soil?It contains all the darker colored mineralsIt contains volcanic rockIt contains more organic matterIt contains bits of burned trees
- Answer choicesTagsAnswer choicesTags