Download Soil Erosion Quiz

Soil Erosion Quiz
1) Which of the following natural phenomena can increase soil erosion?
a) A large reduction of rainfall.
b) A large increase of rainfall.
c) A forest fire.
d) All of the above.
2) Which farming activities often increase soil erosion?
a) Plowing the land.
b) Leaving land fallow (without plants) during winter.
c) Disturbing the land with heavy machinery.
d) All of the above.
3) How do grazing animals increase soil erosion?
a) They eat plants to the ground and expose soil.
b) Their hooves churn up the ground.
c) Their hooves pull plant out by the roots.
d) All of the above.
4) Human activities are the only cause of soil erosion.
a) True
b) False
1 5) How do trees protect the ground from soil erosion?
a) Tree roots hold the soil together.
b) A tree canopy stops the rain from falling so hard onto the ground.
c) Leaf litter covers the ground and protects it.
d) All of the above.
6) Which of the following is true of the impact of recreational activities and soil
erosion?
a) Hikers and off-road vehicles both cause the same amount of soil erosion.
b) Off-road vehicles cause more soil erosion than hikers because they disturb more ground.
c) Hikers do not cause soil erosion.
d) Humans do not cause soil erosion.
7) Parking lots and other manmade ground coverings may increase erosion around
their edges.
a) True
b) False
8) About one-third of the topsoil that was present in the United States before the
arrival of Europeans has now eroded away.
a) True
b) False
2 9) The loss of topsoil to erosion is bad because
a) Topsoil contains most of the nutrients.
b) Topsoil protects the rich organic material beneath it.
c) When the topsoil is gone it means that the entire soil profile has eroded away.
d) All of the above
10) The agents of erosion are water, ice, wind and gravity.
a) True
b) False
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