1. Homework Review

2. p.59

3. Which is bigger a supergiant star or a galaxy? GALAXY

4. In which galaxy do we live? MILKY WAY
p. 363 #2

5. p. 363 #5 List four galaxy shapes Spiral Barred spiral Elliptical
Lenticular
irregular
p. 363 #5

6. According to the big bang theory, how large was the universe before it exploded and expanded in all directions? SMALLER THAN THE NUCLEUS OF AN ATOM
p. 363 #12

7. p.61

8. p. 343 #4 size color brightness
List four variables astronomers use to classify stars. temperature
size
color
brightness
p. 343 #4

9. How does the size of the sun compare with the size of other stars
How does the size of the sun compare with the size of other stars? MEDIUM
p. 343 #5

10. What is a light year? UNIT USED TO MEASURE THE DISTANCE BETWEEN STARS AND GALAXIES
p. 343 #6

11. What can you tell about a star by its color
What can you tell about a star by its color? TEMPERATURE Blue& white=hottest Red=coldest
p. 343 #8

12. Tonight’s Homework Read: 16.1 Do: p.320 #1, 3, 8 and 11 Q and A
Number 8 is NOT multiple choice
Tonight’s Homework