Download Chapter 27 Review Guide// ESS

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Chapter 30 Review Guide// ESS
1. List 3 ways that stars are different from each other.
2. What is the relationship of color to a star’s surface temperature?
3. How do astronomers determine a star’s composition and temperature?
4. What are the two types of stellar motion?
a. What causes the stars to “move” westward across the night sky?
b. Why do we see different stars at different times of the year?
c. What are three ways a star can actually move on its own?
d. Why do stars appear to be fixed & motionless in a constellation?
5. What are circumpolar stars
6. Define the term “light year.”
7. What is the difference between “apparent magnitude” and “absolute magnitude?”
8. Which star appears brighter to us…a +10 or a -4?
9. Draw a word diagram that shows the life cycle of a sun sized star and a massive star. Label all the stars &
stages
10. Name the type of reaction (and the elements involved) that occurs in main sequence stars.
11. Why does a main sequence star stay in equilibrium?
12. What are the differences between a nova & a supernova?
13. Draw the diagram that astronomers use to classify stars. Include the title, label both axes, and include the four
main classifications of stars in their proper positions on the diagram. (HR Diagram, Magnitude, Temperature,
Dim, Bright, Hot, Cold, White Dwarf, Main Sequence, Giant,SuperGiant)
14. Study these constellations & their stars: Orion (Betelguese), Ursa Minor (Polaris), Canis Major (Sirius).
15. What is the Right Ascension (Hours and minutes) & Declination (degrees + or -) of the star Altair and the
constellation Aquilla?
Declination
Right
Ascension
Altair
Aquilla
16. In what stage of stellar evolution do the following events occur?
___Planetary nebula,
___white dwarf
___main sequence
___neutron star
___Nebula
___protostar
___helium fusion
___supernova
___hydrogen fusion,
___nova
___black hole
___giant or supergiant
___star birth,
___star death
___pulsar
___extreme gravity