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A Multiple Choice: Choose the letter of the best answer 1. Which of the following is true about the characteristics of stars? a. Red stars are hotter than blue stars. b. Blue stars emit light of shorter wavelength c. Hotter stars emit light of longer wavelength. d. Cooler stars emit light of shorter wavelength. 2. By studying starlight, scientists may learn the following things about stars except a. age b birth composition d. temperature 3. The stage in the life ofa star that remains after a supernova may be any of the following except a. black hole b. neutron siar c .pulsar d. red giant 4. The following stars have almost same brightness as seen from Earth. In terms of true brightness, which is the brightness? a. Alpha Centauri b. Arcturus c. Betelgeuse d. Sirrius 5. Why do most stars fall along the main sequence of the H-R diagram? a. The mass of most stars is large. b. Most massive stars are already dead. c. Most stars differ in luminosity and surface temperature. d. The stars spend a majority of their lives fusing hydrogen into helium in their cores.
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