Radiant energy from the Sun is composed of shorter wavelengths than radiation from the Earth because the Sun
A. has a higher temperature than the Earth.
B. is an energy source while the Earth is primarily an energy receiver.
C. has much more thermal energy.
D. none of the above
Answer: A
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The biosphere is best defined as ________
A) all living and nonliving parts, including the flow of energy and matter B) all Earth's organisms and the nonliving environment with which they interact C) all Earth's organisms and their physical and aquatic environment where energy and matter are cycled D) a grouping of plants and animals that interact with one another E) a regional grouping of plants, animals, and abiotic factors
The U.S. Department of Energy estimates that wind farms at favorable sites in North Dakota, South Dakota, Kansas and Texas
a. could meet the electricity needs of the western half of the United States, minus Alaska and Hawaii b. could meet the electricity needs of these four states, thereby reducing draw of electrical power from hydroelectric dams c. could meet the electrical needs of the northern plains states during the summers, but not the winters d. could more than meet the electricity needs of the lower 48 states e. could meet the electricity needs of the 48 states during the summers if air conditioning use in private homes was reduced
The mechanical weathering process that occurs because of pressure release is:
a. creep b. frost wedging c. hydrolysis d. sheeting
According to the fifth report of the IPCC, the atmospheric concentrations of carbon dioxide we are now recording are unprecedented for (at least) the past ________.
A. three hundred years B. millennium C. two decades D. century E. eight-hundred thousand years