Which statement about Pluto's discovery is FALSE?
A) It was predicted by Percival Lowell, based on perturbation theory.
B) It was discovered by Clyde Tombaugh close to Lowell's predicted position.
C) It was found in 1930, the first planet found by an American.
D) It was the massive jovian Lowell described as "Planet X" in his calculations.
E) Cold and dark, it was named for the god of the underworld.
D
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You travel 2640 feet in thirty seconds while in a 65 mi/hr zone. (There are 5280 ft in one mi.) Your average speed is
A. less than the speed limit. B. larger than the speed limit. C. exactly the speed limit.
What is the density-wave model?
A. It is a model who puts on a show at astronomy meetings. B. It is a description of how light propagates. C. It is a theory of the origin of the Universe. D. It is a way of describing the formation of Galactic spiral arms.
Increasing the temperature of a blackbody by a factor of 3 will increase its energy by a factor of
A) 3. B) 6. C) 9. D) 12. E) 81.
Naturally occurring uranium ultimately decays to isotopes of the element named ______________
Fill in the blank(s) with correct word