In water the speed of sound
A. increases with decreasing temperature.
B. increases with increasing pressure.
C. all of the above.
D. none of the above.
Answer: B. increases with increasing pressure.
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Which graph best shows how the age of oceanic crust changes across a mid-ocean ridge?
A. Graph a B. Graph b C. Graph c
Historic earthquakes in the Rio Grande Rift area have had only small to moderate magnitudes, but the continental lithosphere continues to compress and shorten, thus presenting a real hazard for large earthquakes.
Answer the following statement true (T) or false (F)
Earth's tallest trees are the
A) coast douglas fir (Pseudotsunga menziessii). B) giant ash (Eucalyptus regnans). C) coast redwoods (Sequoia sempervirens). D) sitka spruce (Picea sitchensis).
________ was the English engineer and canal builder who observed that sedimentary strata in widely separated areas could be identified by their distinctive fossil assemblages
A) Isaac Newton B) William Smith C) Charles Lyell D) Charles Darwin