Detailed Instructions: You need to read the given passage and construct a question about the information present in the passage. The question should be answerable from the passage. Most importantly, only those questions are allowed whose answers cannot be determined from a single sentence. Do not generate questions that require only a single sentence to answer. Instead, try to combine two sentences and create a question from that combination. Do not create open-ended questions, i.e., the answers to them cannot be found precisely from the information provided in the passage.
Problem:Paragraph- Sent 1: Like flowing water, flowing ice erodes the land.
Sent 2: It also can deposit the material elsewhere.
Sent 3: Glaciers cause erosion in two main ways: plucking and abrasion.
Sent 4: Plucking is caused when sediments are picked up by a glacier.
Sent 5: They freeze to the bottom of the glacier and are carried away by the flowing ice.
Sent 6: Abrasion occurs when glaciers scrape over the Earths surface.
Sent 7: The ice sheet acts like sandpaper.
Sent 8: The ice contains sediments and rocks frozen in the ice.
Sent 9: The rocks and sediment grind away as the glacier moves.
Sent 10: They wear away rock.
Sent 11: They may also leave scratches and grooves in them.
Sent 12: Scientists use these grooves to learn about the direction the glacier has moved.
Solution:
When abrasion occurs, what part of the glacier acts like sandpaper?