Passage II
Mass movement is the movement of soil or rock down a slope. Two types of mass movement are soil creep and block glide (see Figure 1).
Scientists studied soil creep at 3 sites (Sites 1-3) and block glide at 3 other sites (Sites 4-6) in a particular region. Beginning on March 1, 1995, and every 6 months thereafter until September 1, 1998, the scientists measured the cumulative distance that material at the surface had moved since September 1, 1994. Figures 2 and 3 show the results for Sites 1-3 and for Sites 4-6, respectively. Each figure shows the amount of precipitation that fell at each of the 3 sites over each 6 month period.
8. Which of the following statements best explains why precipitation data were collected along with cumulative distance data?
Your Answer is
Correct Answer is H
Explanation
General knowledge questions.
Precipitation erodes rock and soil, accelerating their movement.