A coral is a type of ______ that secretes _______ to form an organic rock home.
A. polyp; calcium carbonate
B. polyp; silica
C. algae; calcium carbonate
D. algae; silica
Approximately what percentage of the world's population lives within 100 km of the ocean?
A. 1/20
B. 1/4
C. 2/5
D. 9/10
As the discharge of a stream increases, which of the following also happens?
A. Stream channels narrow, become shallower, and lose velocity.
B. The rate of flow decreases.
C. Channel width increases but channel depth decreases.
D. Width, depth, and velocity all increase
In order to control flooding, levees are frequently constructed along the banks of rivers to confine flow to the channel. Given this, what happens to the flow velocity and erosive power of the stream during a flood, before the water overflows the levee? (Consider the equation Q=wdv when answering this question.)
A. Velocity increases because the width does not increase, and the erosive power increases.
B. Velocity increases because depth does not increase, and the erosive power increases.
C. Velocity decreases because the depth of the channel is significantly greater, and the erosive power increases.
D. Velocity decreases because the width of the channel is significantly less and the erosive power decreases.
Rectangular drainage patterns form as a result of _____.
A. differential resistance to erosion
B. domal uplift
C. flow through anticlinal and synclinal topography
D. flow through a faulted landscape
Rivers east of the continental divide in the Rockies drain into the
A. Pacific drainage
B. Hudson Bay/Arctic drainage
C. Gulf/Atlantic drainage
D. interior West drainage
The construction of a dam across a river is likely to cause ______ upstream of the dam, and _______ downstream.
A. erosion; aggradation
B. erosion; erosion
C. aggradation; erosion
D. aggradation; aggradation
The littoral zone extends indland to
A. the foreshore dune
B. the backshore dune
C. the trough between the primary and secondary dune
D. the highest water line that occurs during a storm
Which of the following occurs when the Sun, Moon and Earth are in alignment (i.e., in opposition or conjunction)?
A. maximum tidal ranges occur
B. neap tides occur
C. a lower tidal range occurs
D. none of the above -- this type of alignment does not happen in nature.
A. polyp; calcium carbonate
B. polyp; silica
C. algae; calcium carbonate
D. algae; silica
Approximately what percentage of the world's population lives within 100 km of the ocean?
A. 1/20
B. 1/4
C. 2/5
D. 9/10
As the discharge of a stream increases, which of the following also happens?
A. Stream channels narrow, become shallower, and lose velocity.
B. The rate of flow decreases.
C. Channel width increases but channel depth decreases.
D. Width, depth, and velocity all increase
In order to control flooding, levees are frequently constructed along the banks of rivers to confine flow to the channel. Given this, what happens to the flow velocity and erosive power of the stream during a flood, before the water overflows the levee? (Consider the equation Q=wdv when answering this question.)
A. Velocity increases because the width does not increase, and the erosive power increases.
B. Velocity increases because depth does not increase, and the erosive power increases.
C. Velocity decreases because the depth of the channel is significantly greater, and the erosive power increases.
D. Velocity decreases because the width of the channel is significantly less and the erosive power decreases.
Rectangular drainage patterns form as a result of _____.
A. differential resistance to erosion
B. domal uplift
C. flow through anticlinal and synclinal topography
D. flow through a faulted landscape
Rivers east of the continental divide in the Rockies drain into the
A. Pacific drainage
B. Hudson Bay/Arctic drainage
C. Gulf/Atlantic drainage
D. interior West drainage
The construction of a dam across a river is likely to cause ______ upstream of the dam, and _______ downstream.
A. erosion; aggradation
B. erosion; erosion
C. aggradation; erosion
D. aggradation; aggradation
The littoral zone extends indland to
A. the foreshore dune
B. the backshore dune
C. the trough between the primary and secondary dune
D. the highest water line that occurs during a storm
Which of the following occurs when the Sun, Moon and Earth are in alignment (i.e., in opposition or conjunction)?
A. maximum tidal ranges occur
B. neap tides occur
C. a lower tidal range occurs
D. none of the above -- this type of alignment does not happen in nature.