Chapter 7.1 Glaciers

Edit Answers
123456789101112131415161718192021
Across
  1. 3. Depressions created when a block of ice becomes lodged in glacial deposits and subsequently melts.
  2. 4. Trough A U-shaped valley that was once V-shaped but was deepened by a glacier as it erodes it away.
  3. 6. Material deposited directly by the glacier.
  4. 7. Sharp-edged ridges created by Valley Glaciers.
  5. 10. Sharp pyramid-like peaks that project above mountain landscapes as they are formed by Valley Glaciers..
  6. 11. Glacier A stream of ice that flows between steep rock walls from near the top of the mountain valley.
  7. 13. Sheets Enormous ice masses that flow in all directions from one or more centers and cover everything but the highest land. Also called Continental Glaciers. Only two left: Antarctica and Greenland.
  8. 14. Ridges composed largely of sand and gravel deposited by a stream flowing beneath a glacier near its terminus.
  9. 15. A bowl-shaped depression at the head of a glacial valley.
  10. 17. Layers or ridges of till.
  11. 20. Glaciers lose large chunks of ice at the foot as they break off. These are icebergs.
  12. 21. Plains Sloping plains consisting of deposits from meltwater streams in front of the margin of an ice sheet.
Down
  1. 1. Slip Slipping and sliding downward due to gravity as the ice slips along a layer of water and mud.
  2. 2. Flow Involves movement within the ice under intense pressure.
  3. 4. Budget The balance, or lack of balance, between accumulation at the upper end of a glacier and loss, or wastage, at the lower end.
  4. 5. Age Began 2 to 3 million years ago during the Pleistocene epoch and ended about 15,000 years ago. Almost 30% of Earth’s land was covered in ice. Responsible for many of Earth’s land features including the Great Lakes.
  5. 8. Drift Sediment laid down by glacial meltwater.
  6. 9. Lifting of rock blocks from the bedrock
  7. 12. Streamlined, asymmetrical hills composed of glacial dirt.
  8. 16. A thick ice mass that forms above the snowline and moves over land for over hundreds or thousands of years.
  9. 18. Occurs as the glacial ice and its rock fragments move over the bedrock.
  10. 19. The movement of glaciers. Flow happens in two ways.