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A review of key concepts related to stars and galaxies, including the definition of nebulas, galaxies, the Sun, H-R diagram, magnitudes, black holes, and the life cycle of stars. It also covers the classification of stars and galaxies, the properties of different types of galaxies, and the composition of the universe.
Typology: Exercises
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Name ____________________________ Date_________________
13.What characteristics do scientists use to classify stars? HR diagram
(Temperature & Luminosity)
14.What will our Sun become after it runs out of hydrogen? White Dwarf 15.In order to find the temperature of a star scientist look at the stars Color 16.What galaxy is our sun located in? Milky way 17.Where in that galaxy is our sun located?
The outer edge of one of the spiral arms 18.What is the closest star to the Earth? The Sun
19.What force holds a galaxy and stars together? Gravity 20.The process that stars use to produce energy is called Nuclear Fusion 21.What elements have to fuse together in order for stars to produce energy? Hydrogen & Helium 22.Why does our Sun appear brighter than any other star in the galaxy? It is closer to us
28.Name the steps in the life cycle of a Supergiant?
**1. 2. Which group of stars are hot, but dim? White DwarfsName a Main sequence star that is NOT our Sun. Sirus
**6. What star is brighter than Aldebaran, but dimmer than Spica? Polaris