Sound Waves in the Interstellar Medium

question 50

Multiple Choice

Sound waves in the interstellar medium

• A)travel so slowly that they are undetectable.
• B)can travel through the gas, but the very low density of the interstellar medium makes them inaudible.
• C)can travel through the halo interstellar medium but not the disk of the galaxy.
• D)cannot travel through the gas.
• E)travel extremely quickly and are therefore very loud.

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