Multiple Choice
What process makes an emission nebula glow?
A) electric currents caused by the flow of ionized gas, heating dust particles
B) free electrons emitting light as they pass close to, and are accelerated by, positively charged ions
C) light emitted when electrons jump between energy states in hydrogen atoms
D) high-energy electrons spiraling along magnetic field lines
Correct Answer:

Verified
Correct Answer:
Verified
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