
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 a star?
Back
A sphere of plasma held together by its own gravity undergoing nuclear fusion.
2.
FLASHCARD QUESTION
Front
What is the azimuth for a star in a diagram?
Back
The angle measured from the north point of the horizon, typically in degrees.
3.
FLASHCARD QUESTION
Front
What hand signal would represent 10 degrees?
Back
A common hand signal for 10 degrees is to hold your hand flat with fingers extended, representing a small angle.
4.
FLASHCARD QUESTION
Front
Which layer of a star do we see?
Back
Photosphere.
5.
FLASHCARD QUESTION
Front
Which of the following letters does not represent a spectral class?
Back
Y.
6.
FLASHCARD QUESTION
Front
What is the photosphere?
Back
The visible surface of a star from which light is emitted.
7.
FLASHCARD QUESTION
Front
What is the corona of a star?
Back
The outermost layer of a star's atmosphere, visible during a solar eclipse.
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