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Astronomy ES.13

Stars and the Universe

QuestionAnswer
What are the names of the two theories that explain how the earth, and the solar systems and stars were formed. The Big Bang Theory, Solar Nebular
What are galaxies? Collections of billions of stars.
What diagram shows the relationship between absolute magnitude (brightness) in relation to their surface temperature? The Hertzsprung – Russell (H-R)
Distances in our universe are measured in what? Light Years
Black holes come at what point in the life cycle of some super giant stars? The end
What is the order of less massive stars? 1. Nebula, 2. protostar, 3 main sequence star (born), 4. white dwarf, 5. black dwarf (death)
True or false. Stars have a finite lifespan and don't evolve over time. False. They have a finite lifespan and DO evolve over time.
Blue giant stars put out about ________ times as much energy as the sun 10,000
How long is our sun's lifespan? 12 Billion Years
What is a Solar Nebula? Solar Nebula is huge, vast clouds of ice, gas and dust.
Created by: Starfire52
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