Question

simulation courtesy of astronomy education at the university of nebraska - lincoln (https://astro.unl.edu). note: you can access a full - screen version of this tool here. part (a) when the telescope is pointed at the incandescent light bulb, which type of spectrum is displayed in the spectrometer? continuous correct! part (b) when the telescope is pointed at the incandescent light bulb with the gas cloud between the two, which type of spectrum is displayed in the spec absorption correct! part (c) when the telescope is pointed at the gas cloud from above, which type of spectrum is displayed in the spectrometer? continuous absorption emission submit hint feedback i give up! 2 submission(s) remaining hints: 0% deduction per hint. hints remaining: 1 feedback: 0% deduction per feedback.

Explanation:

When a gas cloud is excited (for example, by nearby stars or other energy - sources), electrons in the gas atoms move to higher energy levels. When these electrons return to lower energy levels, they emit photons at specific wavelengths, creating an emission spectrum. When the telescope is pointed at the gas cloud from above, we are observing the light emitted by the gas cloud itself, so the spectrum is an emission spectrum.

Answer:

Emission