Nuna 10 – Quiz – Glaciers
Name: _________________
1. A giant moving sheet of ice is called a _______________.
a. Crevasse
b. Glacier
c. River
d. Snowfield
2. True or False: Glacier cause erosion, the wearing down of rocks into smaller
pieces.
a. True
b. False
3. Glaciers make valleys ____________________.
a. Narrower and deeper
b. Narrower and shallower
c. Wider and deeper
d. Wider and shallower
4. Glaciers pick up rock material as they move. This rock material is made up of a
mix of different sized pieces of rock. The rock material being moved by a glacier
is called ____________.
a. Igneous
b. Metamorphic
c. Till
d. Rock Flour
5. What are moraines?
a. A pile of snow that has been rained on
b. A mound of ridge of mixed sizes of rock that has been left at the side or
end of a glacier
c. A mound or ridge of rock of one size that has been left at the side or end
of a glacier
d. A deep crack in the surface of a glacier
6. Glaciers play a role in ___________________.
a. The rock cycle
b. The water cycle
c. Both the rock cycle and the water cycle
d. Neither the rock cycle or the water cycle
7. Where would you find an alpine glacier?
a. Under water
b. At the top of a mountain
c. Deep in a valley
d. On flat land during an ice age
8. Where would I find a continental glacier or ice sheet?
a. Africa
b. Baker Lake
c. Greenland
d. Toronto
9. What is firn?
a. Freshly fallen snow on top of a glacier
b. Old snow that has been recrystallized into a more dense form
c. Ice filled with air bubbles
d. Ice deep within a glacier where all off the air bubbles have been absorbed
10. Ice that has air bubbles in it looks _________.
a. Blue
b. Green
c. Purple
d. White
11. What was the name of the ice sheet that covered most of northern North
America during the ice age 20000-36000 years ago?
a. The Tukoyaktuk Ice Sheet
b. The Columbia Ice Fields
c. The Laurentide Ice Sheet
d. The Keewatin Glacier
12. Snowfields feed _____________ just like lakes feed rivers.
a. Glaciers
b. Snowmen
c. Sublimation
d. Moraines
13. Why is the ice deep within the glacier so dense compared to snow?
a. Because it is full of cracks
b. Because it has been compressed by the weight of the layers of ice and snow
on top of it
c. Because of evaporation and sublimation
14. How long does it take for fresh snow to be compacted to firn, then bubbly ice and
finally into true glacial ice?
a. 1-2 months
b. 1-5 years
c. 25-100 years
d. 1 million to – 2 million years
15. When does a glacier grow?
a. When more ice is lost by melting than snow is added
b. When the amount of ice that melts is the same as the amount that is added
c. When more snow is added than ice is lost through melting
16. What is happening in the zone of ablation?
a. Snow is being added
b. Ice is being lost through evaporation, sublimation, melting and calving
c. Snow is being compacted into firn and glacial ice
17. Where is the zone of accumulation?
a. The upper part of the valley (high altitude)
b. The lower part of the valley (low altitude)
c. In the middle of the valley
18. What is calving?
a. When ice changes from a solid to a gas without first melting into a liquid
b. When melted ice (water) becomes a gas.
c. When large chunks of a glacier break off the edge and fall into the ocean
d. When the glacier recedes because of global warming
19. Which type of glacier moves faster?
a. Alpine glacier
b. Continental glacier
20. When a glacier slides over the rocks of a valley on a thin layer of melted water
that acts like grease, making it easier for the glacier to travel, it is called
_________.
a. Ablation
b. Basal sliding
c. Internal shearing
d. Sublimation
21. Why does ice deep in a glacier (50 m or more below the surface) act more like a
fluid or flexible solid than the ice at the surface?
a. Because the air bubbles are absorbed
b. Because the snow has changed into ice
c. Because the ice is under a lot of pressure from the weight of ice and snow
above
d. Because it is warm deep inside the glacier.
22. When the ice in the glacier separates into thin sheets or layers, although the
glacier to move as one layer slides over another, it is called __________.
a. Ablation
b. Basal sliding
c. Internal shearing
d. Sublimation
23. Where does the ice in a glacier move faster?
a. In the center of the glacier
b. At the sides of the glacier
24. Where does the ice in a glacier move faster?
a. On the surface of the glacier
b. At the bottom of the glacier
25. Which flows faster: thick ice or thin ice?
a. Thin ice
b. Thick ice
26. Glacier move faster when they are flowing on a ____________ slope of a
mountain.
a. Gentle
b. Steep
27. Glaciers move faster when the temperatures are ___________.
a. Cold
b. Warm
28. The ice near the surface of the glacier is ____________.
a. Brittle like crackers
b. Flexible like plastic rulers
c. Fluid like water