1. Glaciers leave deep grooves in the land that are significantly lower than the land around it. Which map could help you to identify glaciers?

• a topographic map
• a road map
• a population map
• a political map

2. Explain in words how you might organize this information to make it easier to see patterns in the data around glaciers. Be sure to include glaciers in your answer.

3. Which of the following appear in patterns across the surface of the Earth?

• Mountains
• All choices are correct
• Ocean ridges
• Volcanoes

4. Look at the images provided. What can be said about the position of the glaciers?

• They are mostly found at the center of continents.
• They are randomly distributed across various continents.
• They are only found on a single continent.
• They are mostly located along coastlines.

5. Refer to figure A. What kind of plate boundary is likely to be found between South America and Africa?

• hot spot
• divergent
• convergent
• transform

6. When the continents were together, Antarctica was near Africa and South America. What pattern would you expect to see repeated there that would support continental drift?

• The existence of numerous glaciers existing in Antarctica in modern times.
• Ancient glacier grooves that match the ones in Africa and South America in the center of Antarctica only.
• Ancient glacier grooves that match the ones in Africa and South America along a coastline.
• All choices are correct.

7. Compare the location of glaciers in figure A versus figure B. How is the changing location of glaciers evidence for continental drift?

• The figures do not tell us enough information about continental drift.
• Glaciers can be everywhere, but they would start in the Southern half of the Earth in the past before the glaciers moved further North over time
• There was one giant glacier that covered the entire planet and melted over time. Only the Northern part is left.
• Glaciers can only form where it is very cold, so it is evidence that the continent was located elsewhere in the past.

8. How does this information relate to the shape of the continents in this map?

• The continents may have moved around, so that each one passed through a cold part of the world and had a glacier form at different times.
• The continents are shaped in a way that they fit together, so that these glaciers would all be touching.
• A giant glacier could have existed between all of them and melted to form the oceans we see today
• Climate change has led the giant glacier to melt and form the oceans. Forces of erosion have carved out the shapes of the continents as we see them now.

9. Explain in words how you might organize this information to make it easier to see patterns in the data.

10. Scientists believe these glaciers were present 200 million years ago. If you traveled 200 millions years into the future, how would you expect the climate to look in places where there are glaciers right now?

11. Look at figure A and B. Which pattern about glaciers can be described?

• glaciers are currently in locations that are much further south than they were in the past
• glaciers are currently much less common and found in fewer places than they were in the past
• glaciers are currently in locations that are much further north than they were in the past
• glaciers are in the same location now that they were in the psat

12. Which piece of evidence would further support the theory of continental drift across Africa and South America?

• Comparing ancient fossils to see if any aquatic animals are found on both continents
• Comparing volcanic events that occurred over the past decade on both continents
• Comparing ancient fossils to see if any plant life is found on both continents
• Comparing modern climates to see if they are similar

13. What relationships do you see in the map provided, between the different continents?

14. The equator passes through the part of Africa where there are signs of an ancient glacier. How does this information help to explain why a glacier was able to form in a place that’s so hot now?

15. Which of the following would be a source of evidence of a former glacier that has since retreated?

• the existence of fossils of ancient plants and animals in the area where the glacier used to be
• large geological changes on the landscape where the glacier used to be, such as ridges and small flat hills
• a location with a current cold, dry climate, such as the arctic
• small geological changes to the landscape, such as new rock types being found in the area

16. How does the data provided support the theory of continental drift?

• Since glacier grooves are mostly found on coastlines and all the grooves are the same direction, these grooves were likely left behind by 1 massive glacier when Africa and South America were connected.
• Since modern glaciers are found in a different location and they can only form in cold places, we know that the positions of the continents had to be in different places in the past.
• Since the coastlines of Africa and South America fit and there is evidence of glaciers at both these locations, both continents were likely connected in the past.
• All choices are correct.