1 What does a red shift indicate about a galaxy?A) It is moving toward Earth. B) It is moving very fast. C) It is slowing down. D) It is moving away from Earth. 2 Approximately how long does it take light from the Sun to reach Earth?A) 2 seconds B) 10 hours C) 1 day D) 8 minutes 3 This illustration shows the interior of which celestial object? (15.0K)
A) Earth B) the Sun C) the Moon D) Saturn 4 Which of the following is a star that expands due to fusion?A) black hole B) galaxy C) constellation D) supergiant 5 Massive stars begin their life cycle as which type of object?A) black hole B) neutron star C) black dwarf D) nebula 6 Which galaxy is Earth part of?A) Arp's Galaxy B) Milky Way Galaxy C) Barnard's Galaxy D) Andromeda Galaxy 7 Which star system is closest to Earth, after the Sun?A) Alpha Centuri B) Betelgeuse C) Sirius D) Pleiades 8 Which of the following has the objects arranged from largest to smallest?A) galaxy clusters, galaxies, stars, universe B) stars, galaxy, galaxy cluster, universe C) universe, stars, galaxies, galaxy clusters D) universe, galaxy cluster, galaxy, stars 9 Which element is most abundant within the Sun? (5.0K)
A) hydrogen B) helium C) oxygen D) carbon 10 As the Sun continues to get older, how will the percentages on the circle graph change? (5.0K)
A) The percentage of hydrogen will increase. B) The percentage of helium will decrease. C) The percentage of oxygen will increase. D) The percentage of hydrogen will decrease.