The number of stars in the Milky Way galaxy is about
A. 25 million.
B. 25 trillion.
C. 100 billion.
D. 100 million.
Answer: C
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Which of the following are renewable energy resources?
A. The sun, the earth's internal heat, and the wind B. The wind, petroleum, and water C. Natural gas, the earth's internal heat, and the wind D. The earth's internal heat, water, and petroleum E. Water, natural gas, and petroleum
The California coast is influenced by a cold ocean current
Indicate whether the statement is true or false
Which of the following is not true about electricity generated by wind?
A) It is cost-competitive with electricity generated by coal, oil, and nuclear. B) Turbines have been installed in over 81 countries. C) It could help reduce carbon dioxide emissions. D) There are numerous economic and social benefits associated with wind energy. E) it is non-renewable and has been linked to adverse human health effects.
Which of the following is true of the individual resonance structures which contribute to a resonance hybrid?
A) Each resonance structure actually exists. B) Each resonance structure is more stable than is the resonance hybrid. C) In going from one resonance structure to another the electrons move from one location to another. D) None of the above is true.