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LECTURE 5, SEPTEMBER 7, 2010

LECTURE 5, SEPTEMBER 7, 2010. ASTR 101, SECTION 3 INSTRUCTOR, JACK BRANDT jcbrandt@unm.edu. Question 2. a) wavelength b) frequency c) period d) amplitude e) energy. The distance between successive wave crests defines the ________ of a wave. Question 2. a) wavelength b) frequency

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LECTURE 5, SEPTEMBER 7, 2010

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  1. LECTURE 5, SEPTEMBER 7, 2010 ASTR 101, SECTION 3 INSTRUCTOR, JACK BRANDT jcbrandt@unm.edu ASTR 101-3, FALL 2010

  2. ASTR 101-3, FALL 2010

  3. ASTR 101-3, FALL 2010

  4. ASTR 101-3, FALL 2010

  5. Question 2 a) wavelength b) frequency c) period d) amplitude e) energy The distance between successive wave crests defines the ________ of a wave.

  6. Question 2 a) wavelength b) frequency c) period d) amplitude e) energy The distance between successive wave crests defines the ________ of a wave. Light can range from short-wavelength gamma rays to long-wavelength radio waves.

  7. ASTR 101-3, FALL 2010

  8. ASTR 101-3, FALL 2010

  9. ASTR 101-3, FALL 2010

  10. ASTR 101-3, FALL 2010

  11. ASTR 101-3, FALL 2010

  12. Question 1 a) gamma rays b) infrared c) sound d) visible light e) radio Which of these is NOT a form of electromagnetic radiation?

  13. Question 1 a) gamma rays b) infrared c) sound d) visible light e) radio Which of these is NOT a form of electromagnetic radiation? Sound comes from pressure waves; all others are types of EM radiation of different wavelengths.

  14. Question 8 a) radio & microwaves b) X rays & ultraviolet light c) infrared & gamma rays d) visible light & radio waves e) visible & ultraviolet light What types of electro-magnetic radiation from space reach the surface of Earth?

  15. Question 8 a) radio & microwaves b) X rays & ultraviolet light c) infrared & gamma rays d) visible light & radio waves e) visible & ultraviolet light What types of electro-magnetic radiation from space reach the surface of Earth? Earth’s atmosphere allows radio waves and visible light to reach the ground.

  16. ASTR 101-3, FALL 2010

  17. ASTR 101-3, FALL 2010

  18. ASTR 101-3, FALL 2010

  19. Question 3 a) radius. b) mass. c) magnetic field. d) temperature. e) direction of motion. The frequency at which a star’s intensity is greatest depends directly on its

  20. Question 3 a) radius. b) mass. c) magnetic field. d) temperature. e) direction of motion. The frequency at which a star’s intensity is greatest depends directly on its Wien’s Law means that hotter stars produce much more high- frequency light.

  21. Question 4 Rigel appears as a bright bluish star, whereas Betelgeuse appears as a bright reddish star. Rigel is ______ Betelgeuse. a) cooler than b) the same temperature as c) older than d) hotter than e) more massive than Betelgeuse The constellation ORION Rigel

  22. Question 4 Rigel appears as a bright bluish star, whereas Betelgeuse appears as a bright reddish star. Rigel is ______ Betelgeuse. a) cooler than b) the same temperature as c) older than d) hotter than e) more massive than Betelgeuse Hotter stars look bluer in color; cooler stars look redder. The constellation ORION Rigel

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