cosmos ch02

Which of the following is not a type of electromagnetic radiation? : Which of the following is not a type of electromagnetic radiation? gamma rays x-rays alpha-rays visible light radio waves


A black body produces which kind of spectrum? : A black body produces which kind of spectrum? continuous spectrum absorption lines emission lines electric spectrum all of the above


If you double the frequency of a photon, its energy increases by how many times? : If you double the frequency of a photon, its energy increases by how many times? 2 3 4 10 no change in energy


Match each letter to the name of the corresponding part of the pictured spectrum. What is A? : Match each letter to the name of the corresponding part of the pictured spectrum. What is A? X-rays Visible light Ultraviolet Radio waves Gamma rays Infrared


Match each letter to the name of the corresponding part of the pictured spectrum. What is B? : Match each letter to the name of the corresponding part of the pictured spectrum. What is B? X-rays Visible light Ultraviolet Radio waves Gamma rays Infrared


Match each letter to the name of the corresponding part of the pictured spectrum. What is C? : Match each letter to the name of the corresponding part of the pictured spectrum. What is C? X-rays Visible light Ultraviolet Radio waves Gamma rays Infrared


Match each letter to the name of the corresponding part of the pictured spectrum. What is D? : Match each letter to the name of the corresponding part of the pictured spectrum. What is D? X-rays Visible light Ultraviolet Radio waves Gamma rays Infrared


Match each letter to the name of the corresponding part of the pictured spectrum. What is E? : Match each letter to the name of the corresponding part of the pictured spectrum. What is E? X-rays Visible light Ultraviolet Radio waves Gamma rays Infrared


Match each letter to the name of the corresponding part of the pictured spectrum. What is F? : Match each letter to the name of the corresponding part of the pictured spectrum. What is F? X-rays Visible light Ultraviolet Radio waves Gamma rays Infrared


Which of the following colors is not part of the acronym ROY G BIV? : Which of the following colors is not part of the acronym ROY G BIV? Red Yellow Infrared Violet Green


Fraunhofer lines in the Sun’s spectrum are an example of what kind of spectral lines? : Fraunhofer lines in the Sun’s spectrum are an example of what kind of spectral lines? continuous emission absorption thermal ionizing


According to Wien’s law, a star that emits most of its radiation at 3000 Angstroms is how many times hotter than a star that emits most of its radiation at 9000 Angstroms? : According to Wien’s law, a star that emits most of its radiation at 3000 Angstroms is how many times hotter than a star that emits most of its radiation at 9000 Angstroms? two times three times four times nine times sixteen times


The change in wavelength measured by the Doppler shift of light from an object can be used to measure which property of the object? : The change in wavelength measured by the Doppler shift of light from an object can be used to measure which property of the object? luminosity wavelength relative motion mass frequency


The wavelength of light from an object approaching us is shifted towards which end of the spectrum? : The wavelength of light from an object approaching us is shifted towards which end of the spectrum? red blue green white the wavelength of light from the object is not shifted due to velocity.


Cooler stars emit more radiation at _____ wavelengths compared with hotter stars. : Cooler stars emit more radiation at _____ wavelengths compared with hotter stars. redder bluer greener yellower none of the above.


Hydrogen emits radio waves at a wavelength of 21 cm. What frequency is this? : Hydrogen emits radio waves at a wavelength of 21 cm. What frequency is this? 1.43 x 109 Hz 2.2 x 1010 Hz 2.86 x 1012 Hz 5.46 x 1014 Hz 6.78 x 1015 Hz


For each letter select the matching interpretation for this part of the graph. What is A? : For each letter select the matching interpretation for this part of the graph. What is A? Hotter source Cooler source Continuous spectrum Emission spectrum Absorption spectrum


For each letter select the matching interpretation for this part of the graph. What is B? : For each letter select the matching interpretation for this part of the graph. What is B? Hotter source Cooler source Continuous spectrum Emission spectrum Absorption spectrum


For each letter select the matching interpretation for this part of the graph. What is C? : For each letter select the matching interpretation for this part of the graph. What is C? Hotter source Cooler source Continuous spectrum Emission spectrum Absorption spectrum


For each letter select the matching interpretation for this part of the graph. What is D? : For each letter select the matching interpretation for this part of the graph. What is D? Hotter source Cooler source Continuous spectrum Emission spectrum Absorption spectrum


For each letter select the matching interpretation for this part of the graph. What is E? : For each letter select the matching interpretation for this part of the graph. What is E? Hotter source Cooler source Continuous spectrum Emission spectrum Absorption spectrum


When an electron absorbs a photon and jumps from a lower energy level to a higher energy level, what kind of spectral line is created? : When an electron absorbs a photon and jumps from a lower energy level to a higher energy level, what kind of spectral line is created? Emission Absorption Continuous Ionizing This does not happen.


Match each letter to the corresponding part of the diagram. What is A? : Match each letter to the corresponding part of the diagram. What is A? This is the energy level associated with the Balmer series. This is the ground state of the atom. A transition from this energy level to energy level n=4 would result in an absorption line. A transition from this energy level to energy level n=4 would result in an emission line.


Match each letter to the corresponding part of the diagram. What is B? : Match each letter to the corresponding part of the diagram. What is B? This is the energy level associated with the Balmer series. This is the ground state of the atom. A transition from this energy level to energy level n=4 would result in an absorption line. A transition from this energy level to energy level n=4 would result in an emission line.


Match each letter to the corresponding part of the diagram. What is C? : Match each letter to the corresponding part of the diagram. What is C? This is the energy level associated with the Balmer series. This is the ground state of the atom. A transition from this energy level to energy level n=4 would result in an absorption line. A transition from this energy level to energy level n=4 would result in an emission line.


Match each letter to the corresponding part of the diagram. What is D? : Match each letter to the corresponding part of the diagram. What is D? This is the energy level associated with the Balmer series. This is the ground state of the atom. A transition from this energy level to energy level n=4 would result in an absorption line. A transition from this energy level to energy level n=4 would result in an emission line.


A star that is brightest at infrared wavelengths is likely to be ____ than a star that is brightest at ultraviolet wavelengths. : A star that is brightest at infrared wavelengths is likely to be ____ than a star that is brightest at ultraviolet wavelengths. cooler hotter the same temperature closer further away


Which of the following wavelength ranges of light from the sun are not at least partially blocked by the Earth’s atmosphere? : Which of the following wavelength ranges of light from the sun are not at least partially blocked by the Earth’s atmosphere? Infrared Gamma ray X-rays Visible Ultraviolet


A black body at a certain temperature will emit what kind of spectrum? : A black body at a certain temperature will emit what kind of spectrum? emission absorption continuum Doppler Bohr


A spectral line detected from the left limb of Venus is found to be of a longer wavelength than the same line detected on the right limb. Which side is approaching us? : A spectral line detected from the left limb of Venus is found to be of a longer wavelength than the same line detected on the right limb. Which side is approaching us? Left side Right side It can’t be determined from the information given. Neither. It depends on the orientation of the pole of rotation. Venus rotates retrograde so you can’t tell.


Two stars are the same temperature, but one is twice the radius of the other. Which one is more luminous? : Two stars are the same temperature, but one is twice the radius of the other. Which one is more luminous? The smaller one. The larger one. The more massive one. They have the same luminosity. It can’t be determined from the information given.


A spectrum can be described as a graph of color versus _____. : A spectrum can be described as a graph of color versus _____. wavelength frequency intensity temperature velocity