7. Which of the following is not an agent of erosion?
A. glacier
B. rocks
C. water
D. wind
8. Which of the following cannot be considered as a role of gravity in erosion?
A. It moves glaciers down slope.
B. It loosens the land materials,
c. In mountains, it moves down large slabs of rocks.
D. It acts as agents of mass wasting like landslides, fall, mudflows, and avalanches,
9. What term refers to the process wherein rocks break down into pieces? A. deposition
B. erosion
C. mass wasting
D. weathering
10. What process of chemical weathering is involved when water reacts with one mineral to form a new mineral like feldspar into clay?
A. dissolution
B. hydrolysis
C. oxidation
D. pressure
11. What type of mechanical weathering occurs when freezing of water and repeated thawing in cracks of rocks?
A. abrasion
B. frost wedging
C. oxidation
D. solution
12. Which of the following does NOT cause chemical changes in the composition of rocks?
A. abrasion
B. dissolution
C. hydrolysis
D. oxidation
13. What chemical reaction takes place during rusting of iron?
A. abrasion
B. dissolution
C. hydrolysis
D. oxidation​