A friend argues that if mass were really conserved he would never need to refill his gas tank. What explanation do you offer your friend?
A. The Law of Conservation of Mass does not apply to reactions involving combustion or explosion of matter.
B. The atoms (mass) of gasoline are converted into exhaust fumes.
C. The atoms (mass) of gasoline are converted into energy by the engine according to E=mc2.
D. The oil companies make gasoline in a way that it gets used up so that we are always required to replenish it.
Answer: B
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Sanitary landfills are most likely to result in
A. open dumps. B. the release of methane. C. better ecocities. D. reintroduction of wildlife habitats. E. less urban sprawl.
Explain how John Wesley Powell could have used the relative dating principles of original horizontality,
superposition, and lateral continuity on his journey through the Grand Canyon. What will be an ideal response?
Braided streams are not found in
A) areas where the load is higher than the capacity. B) bedrock-controlled channels. C) streams subject to new sediment from glaciers or landslides. D) locations subject to sediment deposition on the river bed.
What type of natural hazard does the text associate with disruptions of roads and trains in the Washington, D.C., area as well has flight delays at Reagan International Airport, one of the busiest airports in the United States?
A) Flooding B) Earthquakes C) Blizzards D) Hurricanes