Like Jupiter and Saturn, Neptune emits about 2.5 times as much heat energy as it receives from the Sun, although calculations show it should have already lost all of its original heat. What is the most likely explanation?
A) Unlike Uranus, it is still contracting.
B) Radioactive decay has kicked into overdrive, with runaway reactions taking place.
C) The basis for these calculations is currently being questioned by a new breed of more probing scientists.
D) There are also unexplained gravitational effects taking place, which may hold some clue as to where the heat may be coming from.
E) Uranus' gravity is creating a "slingshot" effect, catapulting solar winds into Neptune's atmosphere in the form of as of yet undetected radiation.
A
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Indicate whether the statement is true or false
Tidal power does not ________
A) convert the kinetic energy of tides to electricity B) generate electricity when high tides revert to low tides. C) convert tides into the potential energy needed for electricity generation D) generate electricity using tidal turbines E) operate much like wind turbine electricity generation, except underwater
Which of the following illustrates how humans are using fog as a resource?
A) Electronic freeway signs in California's central valley warn of fog hazards. B) Gliders utilize winds from morning glory clouds for recreational purposes. C) Residents in the Atacama Desert in Chile use nets to intercept advection fog. D) Sand beetles harvest moisture from fog in the Namib Desert.
During the afternoon, the greatest temperature difference between the surface air and the air a meter or so above occurs on a ____ day
A) sunny, calm B) sunny, windy C) cloudy, calm D) cloudy, windy