Deep-water circulation brings dense, cold, oxygen-rich water from the surface to the deep ocean because of ________
A) greater rates of photosynthesis in deep water
B) greater dissolution of oxygen in colder water than warmer water
C) increases in pH with depth
D) decreases in pH with depth
E) greater volcanic out-gassing at the ocean surface
B
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The activities of pirates along the coast of Northern Africa were finally ended in the
A. 1500s B. 1600s C. 1700s D. 1800s
Upon landfall, a tsunami will move ____
a. ?at walking speed b. ?faster than it traveled in the open ocean c. ?at the speed of a helicopter or small airplane d. ?much too fast for a person to outrun e. ?at the speed of a commercial jet
Wave refraction results in ________.
A. wave energy concentrating in bays and wave energy focusing on headlands B. wave energy decreasing in bays and wave energy focusing on headlands C. wave energy concentrating in bays D. wave energy focusing on headlands E. wave energy decreasing in bays
If ocean water were incompressible, the sea level would be ________ its present level.
A. higher than B. lower than C. equal to