B. Directions: Identify which characteristic they differ. Encircle the
letter of the correct answer.
1. The most important factors in determining the rate of
weathering are
a) abrasion and acids from plants roots.
b) rock type and climate.
c) animal actions and oxygen.
d) carbon dioxide and acid rain.
2. Which is not an agent of weathering?
a. Ice
b. soil
C. wind
d. precipitation
3. Plant roots can contribute to
a) chemical weathering only.
b) neither chemical nor mechanical weathering.
c) chemical and mechanical weathering.
d) mechanical weathering only.
4. Water freezing in the cracks of rocks is an example of
a. deposition
c. chemical weathering
b. mechanical weathering d. erosion
5. Abrasion by wind and running water are examples of
a) ice wedging
c. mechanical weathering
b) exfoliation
d. chemical weathering
6. Which of the following things cannot cause mechanical
weathering?
a. water b. acid
C. wind
d. animals
7. Which of the following is NOT a chemical weathering agent?
a) Acidity of rain water C. water
b) Oxygen
d. root pressure
8. The major cause of chemical weathering is
a. Sand
b. water
c. wind
d. frost wedging
9. Limestone caves form as a result of
a. deposition
c. mechanical weathering
b. chemical weathering d. wave erosion
10. Which of these is an example of chemical weathering?
a) Mountains are built.
b) Animals dig burrows in the ground.
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