1. Learning Goals:
4. Complex Knowledge: demonstrations of learning that go aboveand above and beyond what was explicitly taught. 3. Knowledge: meeting the learning goals and expectations. 2. Foundational knowledge: simpler procedures, isolated details, vocabulary. 1. Limited knowledge: know very little details but working toward a higher level.
How do stars differ from moons and planets, and from one another?
How does the classification of stars help us understand how they evolve over their lifetimes?
What are the different types of stars?
What happens when different types of stars die?
Why is it important for us to understand stars?

2. Bell Work
What type of star did you research yesterday? What type of star did the person next to you research? What is one way those two types of stars are different? One way they are similar?

3. Star sizes and colors
Are stars all the same size and color?

4. Our sun is big…

5. Antares instead of our sun.

6. This is Betelgeuse instead of our sun…

7. Pistol Star, Rho Cassiopeia, Betelgeuse, VY Canis Majoris

8. UY Scuti

10. Usually Spectral class Radius (sun=1) Mass O 12-25 20-120 B 4-12 4-20
1.5-4
2-4 F
1.05-2 G K M

11. Underneath your chart:
Explain at least two trends that you notice so far as you move from O-class stars to M-class stars

12. Size comparison
Measure string the length of the diameter.
Fold the string in half .
Hold the middle and use your pencil to draw a scale diagram of these stars!
Label the stars, then guess their color
Star
Diameter
(sun =1)
Color
Sun 1”
Yellow
Betelgeuse
830”*
Orange/ Red
Bellatrix 6”
White
Sirius 2”
Blue/ White
Polaris (North Star)
37”
yellow
Proxima Centauri (closest)
0.03”
Red
Pollux 8”
orange
Please get the string neatly back on the cardboard!! Thanks

14. Types of Stars by Size, Color and Life Cycle
Watch video on mrhyatt.rocks.
1 thing you already knew
2 things that are new to you