Question

question 5 of 19
true
false
answer bank
hot stars look red compared to cool stars.
blue stars radiate like black - bodies.
blue stars are hot compared to red stars.
red stars preferentially reflect red light.
when the wavelength of peak emission occurs in the blue part of the visible spectrum, a star will appear blue.
red light has a shorter wavelength than blue light.

Explanation:

1. Hot stars are typically blue - white, while cool stars are red. So "Hot stars look red compared to cool stars" is false.
2. Stars can be approximated as black - bodies, and blue stars do radiate like black - bodies, so "Blue stars radiate like blackbodies" is true.
3. Blue stars are hotter than red stars due to their higher surface temperatures, so "Blue stars are hot compared to red stars" is true.
4. Red stars emit red light because of their temperature and the peak of their emission spectrum, not because they reflect red light, so "Red stars preferentially reflect red light" is false.
5. When the peak of a star's emission spectrum is in the blue part of the visible spectrum, it appears blue, so "When the wavelength of peak emission occurs in the blue part of the visible spectrum, a star will appear blue" is true.
6. Red light has a longer wavelength than blue light, so "Red light has a shorter wavelength than blue light" is false.

Answer:

False, True, True, False, True, False