What is the major source of photochemical smog?
A. toxic waste disposal sites
B. oil refineries
C. power plant emissions
D. motor vehicle exhaust fumes and industrial pollutants
Answer: D
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In order for a hurricane to form, the layer of warm water must extend from the ocean surface to a depth of at least 400 meters
a. True b. False
Match each country with its capital.
A) Tashkent B) Moscow C) Baku D) Yerevan E) Astana F) Minsk G) Ashgabat H) Bishkek I) Tbilisi J) Dushanbe 66) Russia 67) Belarus 68) Georgia 69) Turkmenistan 70) Uzbekistan 71) Kazakhstan 72) Tajikistan 73) Kyrgyzstan 74) Armenia 75) Azerbaijan
Which statement best characterizes neap tides?
A) Neap tides occur when the moon, Earth, and sun form a right angle. B) Neap tides represent extreme tidal ranges. C) Neap tides occur at the new and full moons every month. D) Neap tides correspond with the timing of spring tides.
What kind of volcano is in this figure?
A. cinder cone B. caldera C. small shield volcano D. large shield volcano E. composite volcano