Why are there virtually no sediments at ocean ridges, even when they are close to land?
A) The sediments get deflected from the topographic high of the ridge.
B) The sediments get buried by volcanic rocks, so are not visible.
C) The crust is too young; there hasn't been enough time for sediments to accumulate.
D) No one knows, it is one of the mysteries of geology.
C
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A flower pot rests on a table. If the action force is Earth pulling downward on the pot, the reaction force is the
A. pot pulling upward on both the table and Earth. B. table pushing upward on the pot. C. pot pulling upward on Earth. D. none of the above
With a limited number of wind observations, tight spacing of height (above sea level) contour lines on a 500-mb chart may indicate areas of ____ winds
A) stationary B) stronger C) weaker D) variable
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A. move control rods in and out of the reactor core to absorb neutrons. B. use a heating fluid to raise the temperature of the reactor. C. release radioactivity into the atmosphere to prevent explosions. D. produce and mine uranium to make fuel. E. store the spent radioactive waste safely.