A star's luminosity changes depending on how far away it is from us.
- True
- False
This statement is false. Luminosity does not change; it is an intrinsic property of a star based on how much energy the star radiates.
This statement is false. Luminosity does not change; it is an intrinsic property of a star based on how much energy the star radiates.
The most massive stars are the most luminous.
- True
- False
This statement is true.
This statement is true.
A star's luminosity can change as the star goes through its life cycle.
- True
- False
True. A star's mass changes as it goes through its life cycle, so its luminosity can change, too.
True. A star's mass changes as it goes through its life cycle, so its luminosity can change, too.
The hottest stars shine blue.
- True
- False
This statement is true.
This statement is true.
Red dwarfs burn through their hydrogen very quickly, which is why they shine red.
- True
- False
False. Red dwarfs burn through their hydrogen slowly, and they are cooler than most other stars.
False. Red dwarfs burn through their hydrogen slowly, and they are cooler than most other stars.
Our sun is an example of a red dwarf.
- True
- False
False. Our sun is a yellow dwarf.
False. Our sun is a yellow dwarf.
Summary
Questions answered correctly:
Questions answered incorrectly:
