Which of the following statements is true of electromagnetic radiation?
A) All electromagnetic radiation has the same energy.
B) As the wavelength of the radiation increases, the energy of the radiation decreases.
C) As the wavelength of the radiation increases, the energy of the radiation increases.
D) There is no specific relationship between wavelength and energy.
B
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Our planet and our lives are powered by
A) radiant energy generated by nearby planets and satellites. B) utilities and oil companies. C) shorter wavelengths of gamma rays, X-rays, and ultraviolet. D) energy derived from inside Earth. E) radiant energy from the Sun.
Geothermal energy is stored in the form of
A. trees and shrubs. B. deserts. C. rainwater. D. soil and rocks. E. ice and glaciers.
The world population is estimated to grow to what size by 2050?
A) over 2 trillion B) 7.4 billion C) 9.8 billion D) 200 billion E) 700 million
If a person buys timber that is certified, he or she can be sure that it is
A) grown without synthetic pesticides and fertilizers. B) made from recycled wood chips. C) sustainably harvested. D) harvested and milled by hand.