TEST BANK For Astronomy A Beginners Guide to the Universe,
8th Edition by Chaisson, Verified Chapters 1 - 18, Complete
Newest Version
Binary stars - ANSWER: Gravitationally attached star pairs orbiting each other
Betelgeuse - ANSWER: Red star, example of star color variation
Rigel - ANSWER: Blue star, example of star color variation
Binary stars conclusion - ANSWER: Stars differ in true brightness and color
Light properties - ANSWER: Form of energy revealing source information
Speed of light - ANSWER: Fastest speed in space: 300,000 km/s
Wavelength - ANSWER: Peak to peak distance of a wave
Frequency - ANSWER: Number of waves passing per second
Photons - ANSWER: Massless light particles traveling at light speed
Diffraction - ANSWER: Bending of waves around obstacles
Prism - ANSWER: Device dispersing light by color
Continuous spectrum - ANSWER: Hot dense objects emit light in all wavelengths
Absorption line spectrum - ANSWER: Cool gases absorb light at specific wavelengths
Emission line spectrum - ANSWER: Hot gases emit light at specific wavelengths
Hydrogen lines - ANSWER: Prominent in A-type spectra
Bohr atom - ANSWER: Atomic structure model with electrons jumping energy levels
Incandescent objects - ANSWER: Explained by Planck, emit light based on
temperature
Wien's Law - ANSWER: Peak wavelength of blackbody radiation indicates
temperature
Stefan-Boltzmann Law - ANSWER: Total power from all wavelengths proportional to
temperature^4
, Planck's formula - ANSWER: Relates brightness to wavelength of hot objects
HR diagram - ANSWER: Plot of true brightness vs temperature for stars
Main Sequence - ANSWER: Where most stars spend 90% of their lives burning
hydrogen
Giant stars - ANSWER: Very luminous G, K, M stars
Dwarf stars - ANSWER: Less luminous G, K, M stars
Brightness - ANSWER: Depends on star's temperature and size
Giants - ANSWER: Larger stars, more luminous
HR Diagram - ANSWER: Plots luminosity vs. temperature
Pleiades Cluster - ANSWER: Shows well-defined main sequence
Ages of Stars - ANSWER: Determined using HR diagram
Harvard Computers - ANSWER: Women interpreting telescope data
Mass Determines - ANSWER: All aspects of a star
Doppler Shift - ANSWER: Results from star's radial motion
Radial Velocity - ANSWER: Motion in line of sight
Color Index - ANSWER: Proxy for temperature
Mass vs. Weight - ANSWER: Mass is intrinsic, weight varies with gravity
White Dwarf - ANSWER: Final fate of some stars
Neutron Star - ANSWER: Result of massive star's collapse
Black Hole - ANSWER: Extreme gravitational collapse
Binary Star System - ANSWER: Two stars orbiting each other
Doppler Effect - ANSWER: Shift in wavelength due to motion
Newton's Law of Gravity - ANSWER: Relates masses to orbital motion
Globular Clusters - ANSWER: Oldest datable objects in the universe
8th Edition by Chaisson, Verified Chapters 1 - 18, Complete
Newest Version
Binary stars - ANSWER: Gravitationally attached star pairs orbiting each other
Betelgeuse - ANSWER: Red star, example of star color variation
Rigel - ANSWER: Blue star, example of star color variation
Binary stars conclusion - ANSWER: Stars differ in true brightness and color
Light properties - ANSWER: Form of energy revealing source information
Speed of light - ANSWER: Fastest speed in space: 300,000 km/s
Wavelength - ANSWER: Peak to peak distance of a wave
Frequency - ANSWER: Number of waves passing per second
Photons - ANSWER: Massless light particles traveling at light speed
Diffraction - ANSWER: Bending of waves around obstacles
Prism - ANSWER: Device dispersing light by color
Continuous spectrum - ANSWER: Hot dense objects emit light in all wavelengths
Absorption line spectrum - ANSWER: Cool gases absorb light at specific wavelengths
Emission line spectrum - ANSWER: Hot gases emit light at specific wavelengths
Hydrogen lines - ANSWER: Prominent in A-type spectra
Bohr atom - ANSWER: Atomic structure model with electrons jumping energy levels
Incandescent objects - ANSWER: Explained by Planck, emit light based on
temperature
Wien's Law - ANSWER: Peak wavelength of blackbody radiation indicates
temperature
Stefan-Boltzmann Law - ANSWER: Total power from all wavelengths proportional to
temperature^4
, Planck's formula - ANSWER: Relates brightness to wavelength of hot objects
HR diagram - ANSWER: Plot of true brightness vs temperature for stars
Main Sequence - ANSWER: Where most stars spend 90% of their lives burning
hydrogen
Giant stars - ANSWER: Very luminous G, K, M stars
Dwarf stars - ANSWER: Less luminous G, K, M stars
Brightness - ANSWER: Depends on star's temperature and size
Giants - ANSWER: Larger stars, more luminous
HR Diagram - ANSWER: Plots luminosity vs. temperature
Pleiades Cluster - ANSWER: Shows well-defined main sequence
Ages of Stars - ANSWER: Determined using HR diagram
Harvard Computers - ANSWER: Women interpreting telescope data
Mass Determines - ANSWER: All aspects of a star
Doppler Shift - ANSWER: Results from star's radial motion
Radial Velocity - ANSWER: Motion in line of sight
Color Index - ANSWER: Proxy for temperature
Mass vs. Weight - ANSWER: Mass is intrinsic, weight varies with gravity
White Dwarf - ANSWER: Final fate of some stars
Neutron Star - ANSWER: Result of massive star's collapse
Black Hole - ANSWER: Extreme gravitational collapse
Binary Star System - ANSWER: Two stars orbiting each other
Doppler Effect - ANSWER: Shift in wavelength due to motion
Newton's Law of Gravity - ANSWER: Relates masses to orbital motion
Globular Clusters - ANSWER: Oldest datable objects in the universe
