Glaciers

6. Characteristic shape of a valley that has been shaped by a glacier
9. Ridge or mound of till deposited at the ends and sides of glaciers as they retreat
12. Huge boulder in the middle of nowhere that was clearly deposited by a glacier
13. The name of the ice sheet that covered most of Canada in the last ice age
14. The name of the last ice age
17. Area of a glacier where snow is removed by melting and sublimation
18. Crescent-shaped gouges chipped out of bedrock due to a rock or other object being dragged along
20. Hill of till that is shaped like half an egg
21. knob Rock outcrop reformed by a glacier - with one side that is smooth and the other jagged due to rocks being plucked out as the glacier moved forward

1. Deep crack in the top, brittle ice of a glacier
2. Bottom end of a glacier
3. Line above which snow remains all year (aka line of equilibrium, firn line)
4. Series of glaciations and interglaciations (warm periods). Several of these have happened over Earth’s history.
5. Large mass of ice made up from compacted & re-crystallized snow that flows under its own weight on land.
7. Glaciers found at high altitudes
8. A winding deposit of sand and gravel from meltwater running through a glacier
10. Granular, compacted snow that has passed through one summer melt season
11. Glacier found at high latitudes that covers large areas (over 50,000 km2) and flows out in all directions
15. aka Continental glacier
16. Scrapes, scratches, and grooves formed in bedrock as glacier dragged rocks and other objects as it advanced
19. Unsorted debris of varying sizes deposited directly by the glacier (not water)