GENERAL KNOWLEDGE

GK

GENERAL SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The chart above shows the speed at which sound travels through different materials. What conclusion can you draw from this data? Material Speed of Sound (m/s) Air 343 Water 1, 433 Wood 3, 300
A
Sound travels faster through air than water
B
Sound travels faster through wood than water
C
Sound travels faster through air than water
D
Sound travels at the same speed through all materials
Explanation: 

Detailed explanation-1: -As a rule sound travels slowest through gases, faster through liquids, and fastest through solids. The speed of light as it travels through air and space is much faster than that of sound; it travels at 300 million meters per second or 273, 400 miles per hour.

Detailed explanation-2: -Temperature is also a condition that affects the speed of sound. Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly.

Detailed explanation-3: -Since sound waves involve the transfer of kinetic energy between adjacent molecules, the closer those molecules are to each other, the faster the sound travels. Therefore, sound travels much faster through solids than through liquids or gas.

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