Question

Sam's father and mother are astronauts. Last month they returned from a tour to the moon. Sam's father told him that they had an air filled helmet and it also had a microphone, which they used for talking to each other. But his mother was not able to listen to him when they opened their helmets. (Assume they were wearing oxygen masks when they opened their helmets). What is the reason?

Answer 1

Hint:The Moon is the sole natural satellite of the Earth. It is the biggest natural satellite in the Solar System compared to the size of its planet, the fifth largest satellite in the Solar System overall, and larger than any dwarf planet, with a diameter of roughly one-quarter the diameter of Earth (equivalent to the breadth of Australia).
Complete step-by-step solution:
The vibrating of particles in a medium produces sound, which is a type of energy. Let's use an example to better understand how sound waves are created: When drumsticks strike the drum, the drum's outer membrane vibrates up and down. The air directly above the drum membrane is compressed whenever the drum membrane travels higher. When the drum membrane vibrates down, the air molecules expand. The difference in air pressure is caused by the compression and expansion of air. This pressure differential in the air is transported through the air like ripples in a pond, resulting in the drum's creation of music. Because sound waves are carried from one point to another by the molecules of solids, liquids, and gases, they require a material medium such as solid, liquid, or gas to move. Because there are no molecules in the vacuum that can vibrate and transport sound waves, sound cannot travel through it. Longitudinal waves are sound waves. They'll need a way to get about. They force the medium's particles to vibrate in the same direction as the waves. Because there are no particles to transmit the vibrations, sound cannot travel through a vacuum. On the moon, there is no atmosphere. Because sound requires a medium to move, it cannot travel in the absence of air. As a result, his mother was unable to hear his father.

Note:Because sound waves are carried from one point to another by the molecules of solids, liquids, and gases, they require a material medium such as solid, liquid, or gas to move. Because there are no molecules in the vacuum that can vibrate and transport sound waves, sound cannot travel through it. Sound can pass through all kinds of matter, including gases, liquids, solids, and plasmas, since mechanical vibrations may be translated into sound. The medium is the material that supports the sound.