H-r diagram graph use and interpretation
Quiz by Don Walker
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36 questions
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- Q1What is the peak wavelength of a blackbody spectrum used to determine a star's temperature?Planck's LawStefan-Boltzmann LawWien's LawKirchhoff's Law30s
- Q2Which color represents the hottest stars on the spectral classification sequence?YellowBlueGreenRed30s
- Q3What type of spectrum is characterized by dark lines on a continuous spectrum?Emission spectrumBlackbody spectrumAbsorption spectrumContinuous spectrum30s
- Q4What does the luminosity axis represent on an H–R diagram?Mass of starsIntrinsic brightness of starsSurface temperatureDistance to stars30s
- Q5How do blackbody curves shift as the temperature of an object increases?They shift to shorter wavelengthsThey become vertical linesThey shift to longer wavelengthsThey remain constant30s
- Q6What is a common outcome for high-mass stars at the end of their life cycles?White dwarfsNeutron starsRed giantsBlack holes30s
- Q7What evidence supports the existence of dark matter?Type Ia supernovaeRedshift measurementsRotation curves of galaxiesGravitational lensing30s
- Q8What phenomenon is primarily associated with Type Ia supernovae?Creation of new galaxiesAccelerating expansion of the universeFormation of black holesFormation of neutron stars30s
- Q9What type of spectrum is produced by excited atoms emitting light?Continuous spectrumAbsorption spectrumEmission spectrumBlackbody spectrum30s
- Q10What is the main sequence on the H–R diagram?A band of stars in a specific temperature-luminosity relationshipA group of white dwarfsA cluster of supernova remnantsA stage of star formation30s
- Q11What is the primary relationship between temperature and brightness for stars?Brightness is independent of temperature.Temperature does not affect brightness.As temperature decreases, brightness increases.As temperature increases, brightness increases.30s
- Q12According to Wien's Law, how does the peak wavelength of a blackbody shift as temperature increases?The peak wavelength decreases as temperature increases.The peak wavelength stays the same.The peak wavelength increases as temperature increases.The peak wavelength fluctuates randomly.30s
- Q13What color do stars emit when they have a lower temperature?GreenBlueYellowRed30s
- Q14What is the spectral classification sequence for stars from hottest to coolest?KMFGABOOBAFGKMZYXWVUTSRABCDEFGH30s
- Q15In the H–R diagram, what does the luminosity axis represent?The distance of stars from Earth.The temperature of stars.The brightness of stars as observed from Earth.The age of stars.30s