Download interactive.hr.diagram

Name:________________________________________Date:__________________Period:_________
H-R Diagram Internet Activity
Go to the following website to answer the following questions:
http://www.wwnorton.com/college/astronomy/astro21/demo/_animations/hr_diagram.swf
To receive credit, you must answer in complete sentences! Don’t be afraid to think!
1) What is plotted along the horizontal axis of an H-R Diagram?
2) Are cool stars located on the right or left of an H-R diagram?
3) Are hot stars located on the right or left of an H-R diagram?
4) What is plotted along the vertical axis of an H-R Diagram?
5) What is luminosity?
6) Where are the brighter, more luminous stars located on an H-R Diagram?
7) Where are the dimmer, less luminous stars located on an H-R Diagram?
8) Where are the larger stars located on an H-R Diagram?
9) How many of the stars on an H-R Diagram are Main Sequence?
10) What color are some of the brightest stars in the night sky?
11) Where are the faint cool stars located on the H-R Diagram?
12) Where are the large, bright (luminous) stars located on the H-R Diagram?
13) Click on Betelgeuse, is Betelgeuse a hot or cool star, bright or faint (dim)? Explain:
14) Where is Betelgeuse located on the H-R Diagram? Is Betelgeuse a Main Sequence star?
15) Click on Vega, is Vega a hot or cool star, bright or faint (dim)? Explain:
16) Where is Vega located on the H-R Diagram? Is Vega a Main Sequence star?
17) Click on Alpha Centauri B, is Alpha Centauri B a hot or cool star, bright or faint (dim)?
18) Where is Alpha Centauri B located on the H-R Diagram? Is Alpha Centauri B a Main Sequence
star?
19) Click on Sirius B, is Sirius B a hot or cool star, bright or faint (dim)? Explain:
20) Where is Sirius B located on the H-R Diagram? Is Sirius B a Main Sequence star?
21) What kind of star is Sirius B?
22) Click on the Sun, is the Sun a hot or cool star, bright or faint (dim)? Explain:
23) Where is the Sun located on the H-R Diagram? Is the Sun a Main Sequence star?
24) What is the fate of large massive, bright, blue luminous stars?
Take the quiz! Go to:
http://www.brookscole.com/astronomy_d/templates/student_resources/0534392040_seeds/fla/hr.swf
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You need a 100 percent on the quiz to receive a stamp. The stamp is worth 12 points! The stamp is worth
10points! Make sure you show me your results!
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