Why sound of light can't be heard?
Light makes no sound, hence there is no "sound of light", and anything that doesn't exist cannot be heard.
Jan saw the flash before she heard the sound what does this tell you about the speed of light and the speed of sound?
With sound, lower frequencies are heard as lower pitch, and higher frequencies are heard as higher pitch. With visible light, the frequency of the vibration is interpreted as color. For visible light, lower frequencies are towards the red, and higher frequencies toward the blue. Outside the range of visible light, differences in light frequency can be detected by instruments, but they are not usually referred to as colors.
Why is lightning seen before sound of thunder is heard even though both occurs simultaneously during thunder storms?
A sound that can be heard in ordinary human ear is audible sound. It is approximately between 20 to 2000 decibel in strength. sound which is audible.. I.e. sound you can hear, as opposed to sound beyond human hearing at very low or very high frequencies. sound that is capable of being heard; sound loud enough to be heard; sound that is actually heard.
Why the sound of thunder in the sky is heard later than the streak of light although they are produced at the same time?
The effect of seeing lightning before hearing thunder is attributed to the speed of light vs. the speed of sound. Light travels at 299,792,458 meters per second where as sound travels slower at 240.29 meters per second (at sea level). Since light is faster than sound, you see lightning before you hear thunder.
Sound requires something to vibrate in order to make itself heard. Space is a vacuum, which has no air, water, earth, etc. So there is nothing there to vibrate to make the sound carry from the source of the sound to the listener's ear. Light requires no such medium in order to get from point a to point b.
The bolt of lightning will generate an intense light. This light will move at (you guessed it) the speed of light. It will be seen pretty much at the instant it is generated. The thunderclap is a mechanical shock wave generated by the superheating of the air in the path of a lightning bolt. This shock wave will travel at the speed of sound in the air. The sound will arrive at an observer's location…