Land plants first appeared on earth approximately 475 million years ago. The formation of which of these energy sources corresponds to this time period?
A. coal
B. uranium
C. hydrogen
D. geothermal
Answer: A
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During which of the following conditions do lake-effect snows occur?
A. when an mT air mass moves over a warm body of water B. when an mT air mass moves over a cold body of water C. when a cP air mass moves over a cold body of water D. when a cP air mass moves over a warm body of water
Why does the temperature change more rapidly over the land than over the ocean? (Hint: Consider how the high specific heat of water might affect the temperature over land versus water.)
What will be an ideal response?
Most reports for the U.S. of loss due to erosion are based on
A) thousands of measurements of soil depth around the country. B) measurements of the amount of soil suspended in the oceans and major rivers. C) changes in the salinity and silt of the ocean where major rivers flush out to sea. D) indirect measurements using maps, aerial photography, and precipitation data from land stations.
Which of the following ice bodies is an example of alpine glaciation?
A) Valley B) Ice Sheet C) Ice Cap D) Iceberg