In the thermohaline circulation systems, surface water is ________
A) saltier and colder
B) less salty, less dense, and warmer
C) driven by winds from north to south
D) warm and dense
E) cold and dense
Answer: B
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Which of the following is true?
A) Water has been discovered on no other planet. B) There is no evidence of water ever existing on Mars. C) Water occurs in significant quantities only on Earth. D) Ice has not been detected below the surface of our Moon.
As given in the text, which of the following appears in the numerator of the fractional term of the Henderson-Hasselbalch equation?
A) the amount of the conjugate base B) the amount of weak acid C) the concentration of conjugate base D) the concentration of weak acid
?Why does a stream bottom erode more deeply when its water level rises in a flood?
a. ?Since its water velocity remains the same, the increased volume of water can carry more sediment. b. ?Its water level rises, so water velocity increases and it can carry more sediment. c. ?It does not—its stream bottom builds up to match the rise in water level. d. ?Its gradient becomes steeper, so it can erode deeper. e. ?To accommodate the additional water, its velocity slows, and it digs in deeper.
Resistance to movement or deformation of soil is called ________.
A. shear strength B. stress resistance C. solifluction D. stiffness quotient E. rigidity