Sound Waves are Longitudinal Waves
Quick practice
Question 1 of 5
Astronauts on the Moon cannot communicate with each other directly by speaking, even if they are standing close to one another. They use radio transceivers instead. What is the primary physical reason for this?
A
The gravitational force on the Moon is too weak to pull sound waves forward.
B
Their heavy space helmets absorb all sound frequencies.
C
There is no material medium (atmosphere) on the Moon to transmit mechanical waves.
D
The temperature on the Moon is too low for sound to travel.
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