Answered step by step
Verified Expert Solution
Question
1 Approved Answer
A glacier is a mass of ice on land that flows under its own weight due to gravity. 1. Which way does a glacier
A glacier is a mass of ice on land that flows under its own weight due to gravity. 1. Which way does a glacier flow? Downhill . . Uphill Depends on the temperature 2. The glacier shown in Cross Section 1 is flowing downhill due to gravity. A spike was put in the glacier at the arrow. On Cross Section 1, draw an arrow showing the direction that the glacier is moving. Imagine the glacier in Cross Section 1 shown is now shrinking due to warming temperatures. Which diagram in Cross Section 2 (A or B) shows where the spike will be found in several years? Explain your choice. 3. 4. Two students are discussing which way glacier ice moves when a glacier is shrinking. Student 1: Glacier ice always flows downhill because of gravity, and A shows the ice flowing downhill. The glacier shrinks because it melts faster than the glacier is flowing. Student 2: I think the ice would flow backwards and carry the spike with it, as shown in B. Because the glacier is shrinking, the ice would flow uphill. I With which student do you agree? Why? Part 2: Glacier budget 5. When a glacier is getting smaller, it is often said that it is "retreating." Explain why this term may cause confusion in understanding how a glacier moves. 6. The amount of ice in a glacier is a balance between additions (e.g. snowfall) and subtractions (e.g. melting). a. On Cross Section 3, circle where most material leaves the glacier due to melting. b. On Cross Section 3, circle where most material is added to the glacier due to snowfall that does not melt in summer. c. On Cross Section 3, draw an arrow showing which way the ice is moving. 11. Remember that the ice itself does not move uphill. Instead, the ice is melting at the end of the glacier faster than it can be replaced by the ice flowing downhill. Which situations could cause the additions to be less than the subtractions? (choose one for each) a. Increasing snowfall or decreasing snowfall b. Increasing melting or decreasing melting 12. Two students are discussing why a glacier might grow. c. Increasing temperatures or decreasing temperatures Student 1: I think it would grow because it is getting colder. For example, this happened during the Ice Age -the world got colder and the glaciers got bigger. Student 2: That is only one reason that glaciers might grow. They might also grow if it snows more, which means an increase in the additions to a glacier. With which student do you agree? Why? 13. On average, most glaciers around the world are currently shrinking because of warming average global temperatures. What are at least two reasons why a few glaciers are growing? 14. Some people have argued that these growing glaciers show that the average global temperatures are not warming up. Based on your previous answers, explain why glaciers can grow, even if temperatures are getting warmer. Cross sections for activity. Answer the questions on a separate sheet of paper and turn it in with this sheet. Cross section 1 for Question #2: Original glacier before shrinking Cross section 2 for Question #3: A B Cross section 3 for Question #6: I
Step by Step Solution
★★★★★
3.39 Rating (158 Votes )
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started