Name ______Date ______
Soil Science Posttest
Circle the best answer.
1. A rich soil that has a lot of humus in it is called
A. clay B. sand
C. loam D. bedrock
2. A type of soil that has very small grains and small spaces between them is called
A. sand B. clay
C. subsoil D. loam
3. The top layer of soil is called
A. upper soil B. subsoil
C. sand D. topsoil
4. When farmers plant strips of different crops next to each other it is called
A. strip cropping B. conservation
C. fielding D. contour planting
5. ______is the layer of bits of rocks and humus found on Earth’s crust.
A. volcanoes B. crops
C. soil D. dust
6. The decayed remains of dead plants and animals in soil is _____.
A. clay B. humus
C. fungus D. rock
7. One way to save soil is to ______.
A. grow only one crop all the time.
B. plant crops straight up and down hills.
C. plant grass between rows of crops.
D. till up the soil three times a year.
8. Air is part of the soil.
True False
9. Soil has is made up of only one layer.
True False
10. Sand is a type of soil.
True False
11. True soil does not contain water.
True False
12. Plants get ______from the soil.
A. clay B. loam
C. minerals D. sand
13. ______is a feature of loam.
A. Mostly large particles
B. White color
C. Lots of humus
D. A sticky feeling
14. The solid rock under soil is called ______.
A. bedrock B. subsoil
C. topsoil D. humus
15. Earthworms are very harmful to the soil
True False
Farmer Green’s Field
Sand Clay Humus Loam
Where do you think Farmer Green should plant most of his crops and give some reasons why. ______
Which part of the soil unit was your favorite part, and explain why you liked it so much! ______