Universe – Star Life Cycle


 
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The Universe – Enrichment – Star Life Cycle

Directions: Match the best available answer in the second column to the words in the first column. You may use your textbook and notes.
 
1. _____ universe   A.  the color of the youngest, hottest stars (25,000° – 50,000°)
2. _____ galaxy   B.  a group of planets (and their satellites) orbiting a star
3. _____ solar system   C.  a small, dense, dim star, not in the main sequence
4. _____ Milky Way   D.  a star so dense that its atoms collapse, and its electrons merge with its protons, very dim, not in the main sequence
5. _____ light year   E.  the color of middle–aged stars (like our sun, – 6,000°)
6. _____ A.U.   F.  a flat, round or oval galaxy
7. _____ parsec   G.  a dying star that explodes
8. _____ elliptical   H.  a large, extremely bright (but cool) older star, not in the main sequence
9. _____ spiral   I.  a galaxy with no regular shape
10. _____ irregular   J.  a group of millions (or even billions) of stars
11. _____ nebula   K.  the color of older, cooler stars (– 3,000°)
12. _____ blue   L.  the stars, galaxies, dust and everything in space
13. _____ white   M.  – 93,000,000 miles, the distance from the Earth to the Sun, used to measure distances within our solar system
14. _____ yellow   N.  a dying star, so dense that nothing can escape, not even light, not in the main sequence
15. _____ red   O.  stable, “normal” stars, ranging from hot/bright to cool/dim
16. _____ giant/super giant   P.  the color of younger, hotter stars (7,500° – 11,000°)
17. _____ dwarf   Q.  – 6,000,000,000,000 miles, used to measure distances to nearby stars
18. _____ neutron star   R.  the name of our galaxy
19. _____ black hole   S.  a galaxy with arms coming from the center like pinwheel
20. _____ super nova   T.  a cloud of dust and gas, the birthplace/graveyard of stars
21. _____ main–sequence   U.  – 3.26 light years, the distance from the Earth at which a star, when viewed from opposite sides of our orbit, will appear to shift 1 second of arc against the background of stars, used to measure distances to stars

 
 

 
 
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