What two qualities of stars are displayed in a Hertzsprung-Russell diagram?
Review - Life of a Star and HR Diagram

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Science
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8th - 9th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Surface Temperature & Absolute Magnitude.
2.
FLASHCARD QUESTION
Front
What causes the gas and dust in a nebula to pull together to form a protostar?
Back
Gravity.
3.
FLASHCARD QUESTION
Front
In which category of star is the Sun found on an H-R Diagram?
Back
Main Sequence.
4.
FLASHCARD QUESTION
Front
What element is produced when hydrogen fuses during the birth of a star?
Back
Helium.
5.
FLASHCARD QUESTION
Front
What type of star has a temperature of 2,000 K and a luminosity less than the Sun?
Back
Red Dwarf.
6.
FLASHCARD QUESTION
Front
What is the main purpose of the Hertzsprung-Russell diagram?
Back
To classify stars based on their luminosity and temperature.
7.
FLASHCARD QUESTION
Front
What is a protostar?
Back
A developing star that forms from the gravitational collapse of a nebula.
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