
MOD Stars/HR Diagrams/Measuring the Sky
Flashcard
•
Physics
•
12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the angle measure upward from the horizon?
Back
Altitude
2.
FLASHCARD QUESTION
Front
What is a binary star system?
Back
A star system with two stars.
3.
FLASHCARD QUESTION
Front
What characteristics are plotted on H-R diagrams?
Back
Luminosity versus surface temperature.
4.
FLASHCARD QUESTION
Front
Which characteristic CANNOT be determined using an H-R diagram?
Back
Distance from Earth.
5.
FLASHCARD QUESTION
Front
What causes stars to perform nuclear fusion?
Back
Extreme gravitational force.
6.
FLASHCARD QUESTION
Front
What is the H-R diagram used for?
Back
To classify stars based on their luminosity and temperature.
7.
FLASHCARD QUESTION
Front
Define luminosity in the context of stars.
Back
The total amount of energy emitted by a star per unit time.
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