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Question 11.How old do we believe our galaxy to be?
Question 22.This is the name for a very powerful radio source lying in the galactic nucleus we believe is a supermassive black hole:
Question 33.What are the three shapes galaxies take?
Question 44.Matter that is invisible, located in the galactic corona, which gives our galaxy a lot of mass is termed:
Question 55.The halo and central bulge of the galaxy are known as the:
Question 66.Our universe is:
Question 77.Neutral hydrogen is also called:
Question 88.A galaxy twice as far away is moving away ___as fast:
Question 99.Where would you expect most star formation to occur in the Milky Way Galaxy?
Question 1010.This is a low-density and low-luminosity spherical distribution of matter surrounding a galaxy that extends great distances beyond the edge of a galaxy's visible disk:
Question 1111.Decode the meaning of this: 70 km/s/Mpc.
Question 1212.In which type of galaxy are the stars in random orbit instead of rotating?
Question 1313.Even if excited hydrogen emits light, what could be a reason for why we can't detect it?
Question 1414.What do astronomers believe about all the structures of the cosmos we see today?
Question 1515.Our galaxy's supermassive black hole is located where?
Question 1616.The Hubble Law is:
Question 1717.The hypothesis that states large galaxies like the Milky Way Galaxy formed from the combinations of small galaxies and star clusters, is called the:
Question 1818.The Hubble constant is about:
Question 1919.If you venture outside and see a band of light, the Milky Way, on a dark night, then you know you are:
Question 2020.How do we know a lot of mass exists outside the radius of our sun's orbit?
Question 2121.The iron in your blood and the calcium in your bones all originally came from:
Question 2222.The center of our galaxy is known as the:
Question 2323.Astronomers know that population II stars have very odd orbits, ranging from circular to very elliptical ones. Such stars are more likely to be found in the ____. Astronomers also know that Population I stars have almost circular orbits and they are best observed in the ____ of the galaxy.
Question 2424.An apparent change in the frequency of a wave caused by the motion of the observer or source emitting the wave is known as a:
Question 2525.Astronomers use stellar spectra to find out the chemical composition of a star's atmosphere. For a star like our sun, you would expect:
Question 2626.The Milky Way is what kind of galaxy?
Question 2727.By definition, you know that galaxies contain star clusters, or collections of stars. One type of star cluster is the globular cluster. It contains very old stars. Another type is known as an open cluster, containing young stars. Generally, where would you expect to find such star clusters? Hint: use what you've learned in this lesson about the age of stars, their locations, and the structure of the galaxy to help you answer this question.
Question 2828.What type of galaxy is shown in this picture?
Question 2929.The time it takes for the sun to revolve around the center of the Milky Way Galaxy is known as the:
Question 3030.Radio waves can pass through interstellar dust because:
Structure of the Milky Way Galaxy Chapter Exam Instructions
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