Sound waves move the slowest through which medium :
water
ice
air
wood
The Correct Answer and Explanation is :
Sound waves travel at different speeds depending on the medium they pass through. The correct answer is air, where sound travels the slowest. Here’s an explanation of why:
Nature of Sound Waves:
Sound waves are mechanical waves, meaning they need a medium (solid, liquid, or gas) to travel through. These waves move by vibrating particles in the medium, and the speed of sound depends on how quickly these particles can transfer energy to one another.
Factors Influencing Speed of Sound:
The speed of sound is influenced by two main factors in a medium:
- Density: How tightly packed the particles are in the medium.
- Elasticity: How easily the particles return to their original position after being displaced.
Mediums:
- Air: In air, which is a gas, particles are spread out and move relatively freely. Because of this, the transmission of sound from one particle to the next takes more time. The average speed of sound in dry air at 20°C (68°F) is about 343 meters per second (m/s).
- Water: In water, particles are closer together than in air, making it easier for sound waves to transfer energy. Sound travels faster in water than in air, at around 1,480 m/s.
- Ice: Ice, as a solid form of water, has even more closely packed molecules than liquid water, allowing sound to travel at about 3,200 m/s.
- Wood: In solids like wood, the molecules are packed together tightly, making it easier for vibrations to pass through. Sound can travel in wood at speeds around 3,000 to 4,000 m/s, depending on the type of wood.
Conclusion:
Since air is a gas and its molecules are farther apart than those in liquids (water) or solids (ice, wood), sound waves move the slowest through air.