1. Jeopardy Final Jeopardy $100 $100 $100 $100 $100 $200 $200 $200 $200
Galaxies -
General Info
MW – Where
are We?
Anatomy of
a Galaxy
How Do We
Know??
More About
the MW
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Final Jeopardy

2. 1 - $100
Name this
galaxy type
Spiral

3. 1 - $200
This type of galaxy is the smallest and does not fit into any other category
Irregular

4. 1 - $300
Name this galaxy type
Elliptical

5. 1 - $400
This galaxy type may be football shaped or round and is the most common type
Elliptical

6. 1 - $500
Name this galaxy type
Irregular

7. 2 - $100
This is how many arms the Milky Way has 6

8. 2 - $200
What is the name of the arm our solar system is on
Orion

9. 2 - $300
This is how far our solar system is from the center of the Milky Way
26,000 light years or about half way between the center and the edge

10. 2 - $400
When you look at the sky, you can see the center of our galaxy between these two constellations
Sagittarius and Scorpius

11. 2 - $500
This is how wide the Milky Way is
100,000 light years

12. 3 - $100 This is where the stars in a galaxy are moving the fastest
Close to the center of the galaxy

13. 3 - $200
These are the 3 parts of a galaxy
Halo, disk, nuclear bulge

14. 3 - $300
This is at the center of the Milky Way
A large black hole

15. 3 - $400 This is where the youngest stars are found in a galaxy
The disk

16. 3 - $500
This is where the oldest stars are found
In the halo

17. 4 - $100
This is the scientist responsible for discovering much about what we know about galaxies
Hubble

18. 4 - $200
Define a galaxy
a large group of stars, gas, and dust held together by gravity

19. 4 - $300
Define a light year
The distance light can travel in one year… which is about 5.86 trillion miles!

20. 4 - $400 This is how the Milky Way was formed
Areas of gas and dust are attracted by gravity.
Eventually, there is enough mass causing the cloud to rotate.
Rotation causes the mass to flatten into a plane.

21. 4 - $500
This is a method scientists use to study the structure of the Milky Way
1. Select bright objects that you can see
throughout the Milky Way and trace their
directions and distances.
2. Use infrared technology.
3. Radio waves.

22. 5 - $100 This is why scientists named our galaxy the “Milky Way”
It appears as a dim un-resolved "milky" glowing band arching across the night sky

23. 5 - $200
The Milky Way is a part of this cluster
The Local Group

24. 5 - $300
This is how fast our sun is moving in the Milky Way
220 km/s

25. 5 - $400
This is how long it will take for our sun to travel around the milky Way once
Approximately 225 million years

26. 5 - $500
The Milky Way is this type of galaxy
Spiral

27. Final Jeopardy
What are the three reasons it is difficult for us to know the exact structure of the Milky Way?
1. We are in it.
2. Our view of the center is obscured by gas and dust.
3. the distances within the galaxy are extremely large and hard to measure.