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Period: ___________________
Date: ___________________
Study Guide
Chapter 12
Stars, Galaxies, and the Universe
1.
What is the electromagnetic spectrum?
2.
What is a spectroscope?
3.
What do astronomers use spectroscopes for?
4.
What 3 things are used to classify stars?
a. ______________________________
b. . ______________________________
c. . ______________________________
5.
What does the color of a star tell you?
6.
What does each color represent?
Blue: . ______________________________
White: . ______________________________
Yellow: . ______________________________
Red: . ______________________________
7.
How do stars form?
8.
What is a supernova?
9.
What are the differences between the 3 types of galaxies?
Spiral:
Elliptical:
Irregular:
10.
What is the Big Bang Theory?
11.
What evidence do scientists look at to support the big bang theory?
12.
Name: ___________________
Period: ___________________
Date: ___________________
What is a Black Hole and how do Black Holes form?
13.
What force pulls together the matter in stars?
14.
Describe the life-cycle of high-mass and low-mass stars.
15.
What is apparent magnitude?
16.
What is absolute magnitude?
17.
What is a galaxy?
18.
How do stars produce light and heat?
19.
Explain the process of nuclear fusion.
20.
What is the H-R Diagram and how does it work?
21.
What is a light-year and when is its use most appropriate?
22.
What is an astronomical unit and when is its use most appropriate?
23.
List 5 facts about the Milky Way. (P.530)
1.
Contains approx. 300 billion stars