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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 1. A B C D 2. A B C D 3. A B C D 4. A B C D 5. A B C D 6. A B C D 7. A B C D 8. A B C D 9. A B C D 10. A B C D 11. A B C D 12. A B C D 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! Stamp Here