A student researching sound has taken notes:
• Sound travels as waves through air, water, and solids • Sound cannot travel through a vacuum • Sound travels faster in water than in air • Human hearing ranges from 20 Hz to 20,000 Hz • Ultrasound exceeds human hearing range
10
readingThe student wants to explain why there is no sound in space.
A
Sound travels as waves through various mediums like air, water, and solids.
B
Sound cannot travel in space because it requires a medium like air or water to propagate as waves—and space is essentially a vacuum.
C
Sound travels faster in water than in air.
D
Human hearing ranges from 20 Hz to 20,000 Hz frequency.
Correct Answer: B
Choice B. Requiring medium plus space vacuum explains no sound in space.