Which statement is true about the interstellar medium?
A) Gas contains a lot of carbon atoms.
B) Dust blocks the longest electromagnetic wavelengths.
C) Gas obscures the light from distant stars.
D) We know more about the gas than the dust.
E) Dust is spread uniformly through the galaxy.
Correct Answer:
Verified
Q21: Interstellar gas is composed of:
A)only hydrogen.
B)90% hydrogen,
Q22: Due to absorption of shorter wavelengths by
Q23: Molecular hydrogen can best be detected by
Q24: The overall dimming of starlight by interstellar
Q25: The relative density of dust to gas
Q27: Emission nebulae like M42 occur only near
Q28: Most interstellar clouds are:
A)much bigger than our
Q29: The spectra of interstellar gas clouds show
Q30: What is the primary visible color of
Q31: Some regions along the plane of the
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