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Soil Quiz

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soil quiz
Samantha Aitkens
Quiz by Samantha Aitkens, updated more than 1 year ago
Samantha Aitkens
Created by Samantha Aitkens about 9 years ago
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Resource summary

Question 1

Question
Soil formation begins with the weathering of
Answer
  • litter
  • bedrock
  • the A horizon

Question 2

Question
Soil that is rich in humus has high
Answer
  • fertility.
  • Water content.
  • sand content.

Question 3

Question
When earthworms add their wastes to the soil, then die and decay in the soil, they are contributing to the formation of
Answer
  • silt.
  • litter.
  • humus.

Question 4

Question
Living organisms in soil help to
Answer
  • slow the rate of soil formation.
  • build up the C horizon.
  • mix the soil and make humus.

Question 5

Question
Decomposers are the soil organisms that
Answer
  • store moisture in the soil.
  • break down and digest the remains of dead organisms.
  • make spaces in the soil for air and water.

Question 6

Question
Soil is a valuable resource because it
Answer
  • is important to all living things on land.
  • contains sand and gravel.
  • is rich in decomposers.

Question 7

Question
What can cause the loss of soil that is not protected by plant cover?
Answer
  • chemical weathering
  • erosion by water or wind
  • mechanical weathering

Question 8

Question
Most of the work of mixing humus within the soil is done by
Answer
  • fungi.
  • ants.
  • earthworms.

Question 9

Question
A permeable rock weathers easily because it
Answer
  • is made up of small particles.
  • contains many small, connected airspaces.
  • is made up of only one mineral.

Question 10

Question
In which soil layer would you find loam that is rich in humus
Answer
  • A horizon.
  • B horizon.
  • C horizon.

Question 11

Question
The texture, or particle size, of soil determines
Answer
  • soil fertility.
  • whether the soil is topsoil or subsoil.
  • how much air and water the soil can hold.

Question 12

Question
The type of soil called loam is made up of
Answer
  • pure humus.
  • mostly clay.
  • nearly equal amounts of silt, sand, and clay.

Question 13

Question
In a cross section of soil, the B horizon consists of
Answer
  • clay, minerals, and little humus.
  • humus only.
  • partly weathered rock.
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