1) Luminosity refers to a star's... a) Brightness b) Temperature c) Color d) Size 2) The hottest color of star is... a) Red b) Orange c) White d) Blue 3) The brightest stars are found a) on the left side b) on the right side c) at the top d) at the bottom 4) This category has the lowest luminosity, but it has the hottest temperature. a) Red Giant b) Blue Giant c) Main Sequence d) White Dwarf 5) This category has the highest luminosity, and it has the hottest temperature. a) Red Supergiant b) Blue Giant c) Main Sequence d) White Dwarf 6) This category has the highest luminosity, but it has the lowest temperature. a) A. Main Sequence b) B. Red Giants c) C. Red Supergiants d) D. White Dwarfs 7) What is the stage that a star begins its life cycle? a) Planetary Nebula b) Stellar Nebular c) Black Hole d) Supernova 8) This is known as a star explosion. a) Nebula b) Stellar c) Supernova d) Red Supergiant 9) Which type of wavelength has a higher frequency? a) Short Wavelength b) Long Wavelength 10) Which type of wavelength has a lower frequency? a) Short Wavelength b) Long Wavelength 11) What type of galaxy is being show in the picture? a) Spiral b) Elliptical c) Irregular 12) What type of galaxy is being show in the picture? a) Spiral b) Elliptical c) Irregular 13) Which object has a frequency of 1016? a) X-ray b) Gamma Ray c) Ultraviolet d) Microwave 14) What object contains the longest wavelength a) X-ray b) Gamma Ray c) Ultraviolet d) Radio 15) Which color of star has the coldest temperature? a) White b) Blue c) Red d) Yellow

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