Write a paragraph explaining the physical basis of standard time zones
What will be an ideal response?
Answer: The Earth's rotation makes the highest sun of the day (solar noon) pass westward over 15° of longitude per hour. In 24 hours, the sun passes over 360° of longitude (15° per hour times 24 hours equals 360°). Thus, there is one theoretical time zone per 15° of longitude.
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Why did the stream pattern shown above develop?
A. The surface geology is probably very uniform. B. This is probably a volcanic area. C. This is probably an area with alternating layers of weak and resistant rock.
How long does it take for many plastics to decompose?
a. 50 years b. 100 years c. 250 years d. 400 years e. 800 years
Why do humid tropical regions have only small variations in temperature throughout the year?
A) The canopy of trees in the rain forest shade the ground and reflect light all the time. B) The cloud cover and rain do not allow the temperatures to rise or fall significantly. C) The winds associated with these systems rapidly redistribute the heat. D) The location of this climatic region is limited to an area where the solar radiation does not vary significantly. E) The constant humidity maintains a relatively uniform temperature.
Long, narrow deposits of sand that form offshore roughly parallel to the coast are called
A) baymouth bar. B) barrier beaches. C) groins. D) tombolos.