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- 1. Multiple Choice
There are 3 stars in the constellation Orion; Betelgeuse (A), Mintaka (B), and Rigel (C). How do the appearances of Stars A, B, and C compare?
Star C is larger than stars A and B and Star A is a different color then stars B and C.
Star C is smaller than stars A and B and Star A is the same color as stars B and C.
Stars A, B and C are the same color and the same size.
- 2. Multiple Choice
What are some ways the stars in the photo could be grouped or classified?
Stars can be classified by distance and volume
Stars can be classified by distance and height
Stars can be classified by color, size and luminosity (brightness)
- 3. Multiple Choice
Find Betelgeuse in the star collection. Fill out the chart at the right.
What is the temperature of Betelgeuse?
20,000 K
10,000 K
3,400 K
1,000 K
- 4. Multiple Choice
Activity A.
Analyze: What relationship, if any, do you see between a star's color and it's temperature?
There is a relationship between a star's color and it' Mass/Size
The color of a star is directly related to its temperature; thus the temperature of a star determines its color.
There is NO relationship between a star's color and it's temperature.
- 5. Multiple Choice
5. Graph A
What pattern do you see in the graph?
There is NO pattern that forms on the graph
The pattern on the graph is:
The stars are plotted on the bottom of the graph and then they are plotted up to the top of the graph and back down on the bottom of the graph
The stars that are plotted form a straight line on the graph (moving diagonal)
- 6. Multiple Choice
5. Graph B
What does the graph show about the relationship of a star's color and temperature?
There is no relationship of a star's color and temperature.
Red/Orange stars are the coolest and blue stars are the hottest; As stars grow hotter, their temperature changes from Red/Orange to Blue.
Red/Orange stars are the hottest and blue stars are the coolest; As stars grow hotter, their temperature changes Blue to Red/Orange
- 7. Multiple Choice
5. Graph C
Click Move ALL and then Sort Stars. Is the relationship still evident?
Yes
No
- 8. Multiple Choice
6 Infer:
Naos is a star in the Argos constellation. It has a very deep Blue color. What do you think is the approximate temperature of Naos?
Between 3,000 K - 5,000 K ( it is a cool star)
Between 25,000 K - 50,000 K ( it is a hot star)
- 9. Multiple Choice
7. Apply:
The flame of many stove burners is blue, but the wires of a toaster glow orange. How do you think the temperatures of these two cooking appliances compare?
The stove burner is much cooler then the toaster
The stove burner is much hotter than the toaster
- 10. Multiple Choice
Activity B:
How do the stars' luminosity (brightness) compare with radii?
In general, the larger a star is, the brighter it is.
In general, the larger a star is, the dimmer it is.
- 11. Multiple Choice
Activity B:
How do the stars' radii compare with their mass?
In general, the larger a star is, the less massive it is
In general, the larger a star is, the more massive it is.
- 12. Multiple Choice
Activity B
Predict: A
As the radius of a star increases, how do you think its luminosity might change?
Its luminosity will likely decrease
It's luminosity will likely increase
- 13. Multiple Choice
Activity B
Predict B
As the mass of a star increases, how do you thinks its luminosity might change?
Its luminosity will likely increase
Its luminosity will likely decrease
- 14. Multiple Choice
Activity B
Predict C
As the radius of a star increases, how do you think its mass might change?
Its mass will likely decrease
Its mass will likely increase
- 15. Multiple Choice
Activity B
Graph:
Select Graphical plot. Select Luminosity VS Radius, and click MOVE ALL and then Sort Stars. Describe the relationships you see.
In general, Luminosity increases with a greater radius
In general, Luminosity decreases with a greater radius
- 16. Multiple Choice
Activity B
Explain:
Why would the size of a star affect its luminosity?
There is no relationship between a stars size and its luminosity
Large stars likely contain less fuel, so they are NOT capable of producing more energy and give off more light.
Large stars likely contain more fuel, so they are capable of producing more energy and give off more light.
- 17. Multiple Choice
Activity B
Compare: Select Luminosity VS Mass, and click Sort Stars. How does this graph compare with the luminosity vs Radius graph?
In general, more massive stars have greater luminosity values
In general, more massive stars have lower luminosity values
- 18. Multiple Choice
Activity B
Graph
Select Mass vs Radius, and click Sort stars. Describe and relationships you see.
There is NO relationship between the mass and radius of a star
In general, smaller stars have less mass than larger stars; bigger stars have more mass
In general, Larger stars have less mass than smaller stars; smaller stars have more mass
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