Question

Light and sound waves are produced at the same time by an explosion on Earth. A scientist is standing a long way from the explosion. Explain why he hears the explosion a few seconds after he sees it.

Answer 1

Answer:

This happen because light travels faster than sound

Explanation:

Speed of light is approx. 300000000m/s

Speed of sound is 330 m/s in air

Answer 2

Answer:

The speed of light is way much faster than the speed of sound

Explanation:

Speed of light

$3 \times {10}^{8}$

Speed of sound in air

343

[In metres per second]

So the scientist hears the sound after sometime from when he sees it

Also for example - We hear the sound of Thunder 13 seconds later when we see Lighting