What are the two categories of seismic waves?
A) Primary wave and secondary waves
B) Body waves and surface waves
C) Air waves and ground waves
D) Compression waves and tension waves
Answer: B
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When freight cars collide, momentum is conserved in
A. elastic collisions. B. inelastic collisions. C. both of these D. none of the above
On the average, for every 1 km increase in altitude in the troposphere the air temperature:
A) rises by day and drops by night. B) rises about 6.5 degrees Celsius. C) drops about 6.5 degrees Celsius. D) remains unchanged for the first 500 m and then drops.
In which of the following are both compounds effective pain relievers?
A) (R)-ibuprofen and (R)-naproxen B) (S)-ibuprofen and (S)-naproxen C) (R)-ibuprofen and (S)-naproxen D) (S)-ibuprofen and (R)-naproxen
What is the best description of an ecological deficit?
A. The total ecological footprint is larger than the biological capacity to replenish renewable resources. B. The total ecological footprint is smaller than the biological capacity to replenish renewable resources. C. All nonrenewable resources have been exhausted and there are no renewable resources available. D. The total ecological footprint is equal to the sustainable yield of renewable resources. E. The total ecological footprint only involves the use of nonrenewable resources.