* Speed of Light: Approximately 299,792,458 meters per second (m/s). This is constant in a vacuum and changes only very slightly in different mediums.
* Speed of Sound: Approximately 331.3 meters per second (m/s) in air at 0 degrees Celsius.
Key Differences:
* Magnitude: Light travels significantly faster than sound. It's about 899,000 times faster.
* Medium Dependence: Light travels at nearly constant speed in a vacuum, while sound requires a medium (like air, water, or solids) to propagate and its speed varies with the medium's properties.
* Wave Type: Light is an electromagnetic wave, while sound is a mechanical wave.
An Analogy:
Imagine you're watching a fireworks display. You see the flash of light almost instantly, but the boom of the explosion arrives later. This delay is because light travels much faster than sound.
Practical Implications:
* Thunder and Lightning: You see lightning before you hear thunder because light travels much faster than sound.
* Communication: Radio waves (a form of light) transmit information faster than sound waves.
* Sonic Booms: When an object breaks the sound barrier, it travels faster than the speed of sound, creating a shock wave that we hear as a sonic boom.
