13. Which term refers to something that is no longer living but has left behind its mark in the rocks?
A. Fossil
B. Metamorphic C. Mineral
D. Sedimentary rock
14. A rock sample shows shell pieces in it. What type of rock does it belong?
A. Igneous
B. Intrusive
C. Metamorphic D. Sedimentary
15. How do you call the driving force of mass wasting?
A Friction
B. Gravity
C. Landslide
D. Nucleosynthesis
16. Which of the following is NOT an example of physical weathering?
A. Acid rain falling on limestone
C. Freeze-thaw
B. Exfoliation
D. Human activity such as mining
17. Which of the following statements about weathering is FALSE?
A. Rocks of different compositions weather at different rates.
B. Alternating hot and cold temperature increases the rate of chemical weathering
C. The presence of soil slows down the weathering of the underlying bedrock.
D. The longer a rock is exposed at the surface, the more weathered it becomes.
Which of the following describes the general process by which rocks are broken down at the earth's surface?
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