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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 ASTR 101, SECTION 3 INSTRUCTOR, JACK BRANDT jcbrandt@unm.edu ASTR 101-3, FALL 2010
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 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.
Question 1 a) gamma rays b) infrared c) sound d) visible light e) radio Which of these is NOT a form of electromagnetic radiation?
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.
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?
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.
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
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.
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
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