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- 1. Multiple Choice
When you divide the incoming light from an object into individual colors or wavelengths it's called ___a time-series grapha spectruma Fourier transforma histogram - 2. Multiple ChoiceHot objects, that emit light at all wavelengths, are said to give off ___a fractured spectruman extended spectruma single line spectruma continuous spectrum
- 3. Multiple ChoiceThe continuous spectrum of a star has gaps in it, darker bands where different elements ___absorb different colorsreflect different colorstransmit different colorsrefract different colors
- 4. Multiple ChoiceIn 1901, who developed a system to classify stars using many different absorption lines in their spectra?Marie Skłodowska CurieRosalind FranklinAnnie Jump CannonLise Meitner
- 5. Multiple ChoiceWhich physicist showed how objects emit light of different colors based on their temperature?Albert EinsteinJames Clerk MaxwellNiels BohrMax Planck
- 6. Multiple ChoiceHotter stars put out more light at the blue end of the spectrum, while cooler ones peak ___in the redin the yellowin the greenin the violet
- 7. Multiple ChoiceCecelia Payne-Gaposchkin showed that the spectra of stars depended on their ___density and elements in their atmospherestemperature and elements in their atmospherestemperature and molecules in their atmospheresage and molecules in their atmospheres
- 8. Multiple ChoicePayne-Goposchkin showed that stars were overwhelmingly composed of ___hydrogenheliumcarbonoxygen
- 9. Multiple ChoiceThe classification scheme used today arranges stars by ___their size, assigning each a numbertheir size, assigning each a lettertheir temperature, assigning each a numbertheir temperature, assigning each a letter
- 10. Multiple ChoiceThe letters 'O', 'B', 'A', 'F', 'G', 'K' and 'M' arrange stars in order from ___hottest to coolestcoolest to hottestlargest to smallestsmallest to largest
- 11. Multiple ChoiceWhich star, classified as an A0, is the brightest star in the night sky?BetelgeuseSiriusVegaRigel
- 12. Multiple ChoiceA star can actually emit more green light than any other color but we'll wind up seeing it as ___whiteredblueviolet
- 13. Multiple ChoiceIf you look at the Sun's spectrum, it actually peaks ___in the redin the bluein the greenin the yellow
- 14. Multiple ChoiceThe light from the Sun is white but some of the shorter wavelengths get scattered away by ___atoms of oxygen in the airatoms of argon in the airmolecules of nitrogen in the airmolecules of oxygen in the air
- 15. Multiple ChoiceThe total amount of energy emitted by a star is called its ___incandescenceluminosityspectral integrityapparent brightness
- 16. Multiple ChoiceThe luminosity of a star depends on ___its size and temperatureits age and densityits size and distance from usits age and distance from us
- 17. Multiple ChoiceA plot of a stars luminosity vs it's temperature is called ___an HR diagram, after Hertzsprung and Russellan HC diagram, after Hertzsprung and Cannonan CR diagram, after Cannon and Russellan HS diagram, after Hertzsprung and Saha
- 18. Multiple ChoiceThe thick line, running diagonally down an HR diagram is called ___the general trendthe main sequencethe main trendthe general sequence
- 19. Multiple ChoiceComparatively, as shown on an HR diagram, massive stars are ___hotter and more luminouscooler and more luminoushotter and less luminouscooler and less luminous
- 20. Multiple ChoiceThe stars on the lower left of an HR diagram are hot, blue/white but very faint, and are called ___white giantsblue giantswhite dwarfsblue dwarfs
- 21. Multiple ChoiceMost stars live the majority of their lives ___as white dwarfsalong the main sequenceas red giantsas red super giants
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