What are these sharp, glacially carved ridges?

A. cirque

B. arate

C. hogback

D. razorback

E. flatiron

With the Sun and Moon in this position, what does the side of the earth facing the moon experience?

A. a normal high tide

B. a normal low tide

C. a spring tide

D. a neap tide .

With the Sun and Moon in this position, what does the side of the earth facing the moon experience?

A. a normal high tide

B. a normal low tide

C. a spring tide

D. a neap tide

Which feature on this diagram is an arete?

A. 1, the circular depression at the head of the valley

B. 2, a lake in the upper valley

C. 3 , a steep ridge

D. 4, a valley that is above the level of the main valley

What happens to different isotopes of oxygen in this figure?

A. evaporation concentrates lighter isotopes in the resulting water vapor

B. precipitation forms ice that is enriched in heavier isotopes relative to seawater

C. melting of ice preferentially releases heavier isotopes back into the ocean

D. all of these

If an ice block 10 centimeters on each side was melted, how much would it raise the water level in a tank that is 100 centimeters long by 40 centimeters wide?

A. less than $0.5$ centimeters

B. 5 to 1 centimeter

C. 1 to 2 centimeters

D. 2 to 4 centimeters

E. 4 to 10 centimeters

The margins of glaciers are usually darker than the interior primarily because:

A. shearing causes the ice to expel air and become darker

B. glaciers are transparent so the underlying bedrock is visible

C. the sides are moving faster than the interior of the glacier

D. the sides have a higher concentration of rocks and other debris

E. all of these

Till is _______.

A. sorted but not stratified.

B. sorted and stratified.

C. stratified but not sorted.

D. neither sorted nor stratified.

What is the feature numbered 1 in the upper part of this figure?

A. cirque

B. U-shaped valley

C. lateral moraine

D. terminal moraine

The amount of solar heating can increase from:

A. a decrease in sunspot activity and energy output from the Sun

B. a decrease in snow and ice cover on Earth's surface

C. a decrease in the amount of greenhouse gases

D. a huge volcanic eruption that adds ash and dust to the atmosphere

What happens when a glacier encounters the sea or a lake?

A. the ice is more dense than water and so scrapes along the bottom

B. white icebergs float but blue icebergs sink to the bottom

C. large blocks of ice collapse off the front of the glacier and become icebergs

D. rocks released from melted icebergs float on the water surface

E. all of these

Which of the features labeled on this figure is an esker?

A. A.

B. B

C. C

D. D

E. E

What is the origin of curved ridges (R on this flgure) in the Great Lakes area?

A. folds produced during a continental collision

B. paths of ancient rivers

C. piles of sediment deposited by retreating glaciers

D. remnants of a meteoroid impact

Which feature on this diagram is a hanging valley?

A. 1, the circular depression at the head of the valley

B. 2, a lake in the upper valley

C. 3, a steep ridge

D. 4, a valley that is above the level of the main valley