1.
An increase in temperature, with no change in precipitation, would cause
_____________ in the elevation of the firn line.
a) an increase b) a decrease c) no change
2.
Abrasion of bedrock by glaciers is most effective where
a) the ice
is moving slowly c)
the concentration of rock fragments is high
b) the ice
is thin d)
the ice is frozen to the ground
3. Most
of the ice on Earth is found in
a)
4.
In polar regions the transformation from snow to
glacier ice takes
a) a few
days b) a few months c) a few years d) decades
5. Eskers are composed of
_________________ , indicating they were deposited
_________________ .
a)
till ....... at the base of the glacier c) clay ...... in a glacial lake
b) river deposits..... by meltwater streams d)
silt ...... where the wind velocity decreases
6. A
bedrock hill with evidence of glacial erosion on the upstream size, plucking on
the other, is called a
a) drumlin b) cirque c) roche
moutonee d)
moraine
7. Which of the following is NOT a way lakes form directly or indirectly related to glacial periods?
a) cirque depression filled with meltwater forming a tarn (small lake)
b) climate changes cause more rain and less evaporation in the Southwest forming paleolakes
c) ice sheets block river valleys, damming up pro-glacial lakes
d) water fills kettles created by icebergs calving from glacial margin
e) none of the above
8. Permafrost is ground frozen for at least two years and includes the active layer responsible for frost-heave and frost-thrusting of rock fragments. (T/F)
9. Barrier islands:
a) seem to be migrating inland and eroding
b) dissipate storm energy offshore
c) protect the coast from erosion
d) b and c
e) all of the above
10. Rocks formed from sand dunes have a characteristic _______________ layers?
a) folded b) cross-bedded c) flay-lying
d) a and b e) all of the above