# Why do we see a flash of lightning before hearing the sound of thunder?

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## Why do we see a flash of lightning before hearing the sound of thunder?

If we are watching the sky, we see the lightning before we hear the thunder. That is because light travels much faster than sound waves. We can estimate the distance of the lightning by counting how many seconds it takes until we hear the thunder. It takes approximately 5 seconds for the sound to travel 1 mile.

## Why do we see a flash of lightning before we hear the accompanying sound of thunder which characteristic of sound determines how far it can travel before dying out?

In the rainy season, due to very high speed of light, the flash of lightning is seen first and due to comparatively low speed of sound, the sound of thunder is heard a little later. Loudness is the characteristic of sound, which determines how far it can travel before dying out.

## What comes first flash or thunder?

Thunder and lightning happen at approximately the same time, but as you have heard, lightning travels faster than thunder (even though it is moving a supersonic speeds) and thus we see the flash before we hear the thunder.

## Why do we see lightning and hear the thunder a few seconds later?

Lightning is a gigantic spark of electricity that connects the thundercloud to the ground. It’s so hot that it causes the air to “explode” — that’s the sound we hear as thunder. However, thunder travels much slower than the light from a lightning bolt, so we usually hear thunder a few seconds after we see lightning.

## Can you hear thunder and see lightning at the same time?

The rapid expansion of heated air causes the thunder. Since light travels faster than sound, the thunder is heard after the lightning. If you see lightning and hear thunder at the same time, that lightning is in your neighborhood. Lightning from this area is called positive lightning.

## Who is faster light or lightning?

Like other forms of light, the lightemitted from the lightning travels near the speed of light. This speed is near 300,000,000 meters per second. Thunder is the vibration that is emitted by the rapid expansion and contraction of air. Note that the speed of light is much faster than the speed of thunder.

## What does sound pitch depend on?

frequency
The pitch of a sound depends on its frequency of the vibrating body.

## What is the difference between light and sound energy?

The differences between light and sound are as follows: Light waves are electromagnetic waves while sound waves are mechanical waves. Light waves are transverse while sound waves are longitudinal. Light waves can travel in vacuum.

## What is the 30 30 rule for lightning?

When You See Lightning, Count The Time Until You Hear Thunder. If That Is 30 Seconds Or Less, The Thunderstorm Is Close Enough To Be Dangerous – Seek Shelter (if you can’t see the lightning, just hearing the thunder is a good back-up rule). Wait 30 Minutes Or More After The Lightning Flash Before Leaving Shelter.

## Why can I hear thunder without lightning?

No, it is not possible to have thunder without lightning. Thunder starts as a shockwave from the explosively expanding lightning channel when a large current causes rapid heating. However, it is possible that you might see lightning and not hear the thunder because it was too far away. Thunder is caused by lightning.

## How do you know if you’re about to be struck by lightning?

7 Signs That Lightning Is About to Strike

• You See Tall, Bright White Clouds.
• You Can Hear the Thunder Approaching.
• You See Your Hair Standing on End or Feel Tingling.
• You Taste Something Metallic.
• You Smell the Scent of Ozone in the Air.
• You Start to Get Dizzy or Sweat.
• You Can Hear Vibrating, Buzzing, or Crackling.

## Is it safe to sleep near a window during a thunderstorm?

There is not an increased chance of getting hit by lightning if you are near a window. The reason you are supposed to stay away from windows is because the glass could shatter and send pieces flying in all directions. A lightning bolt would explode the glass window before it would travel through the glass.

## What is the fastest thing in the universe?

In modern physics, light is regarded as the fastest thing in the universe, and its velocity in empty space as a fundamental constant of nature. The speed of light in a vacuum is presently defined to be exactly 299,792,458 m/s (about 186,282.397 miles per second).

## What is the fastest thing in the world?

Laser beams
Laser beams travel at the speed of light, more than 670 million miles per hour, making them the fastest thing in the universe. So how does a laser produce the slowest thing on Earth?

## What is difference between loudness and pitch?

Difference between Pitch and Loudness The pitch of a sound is our ear’s response to the frequency of sound. Whereas loudness depends on the energy of the wave. The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.

## Does higher pitch mean louder sound?

Children will often mix up pitch and loudness believing that a higher pitched sound is a louder one. Higher pitched sounds produce waves which are closer together than for lower pitched sounds.

## Is light faster than sound?

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.

## Why both sound and light are considered energies?

Sound and light are similar in that both are forms of energy that travel in waves. They both have properties of wavelength, freqency and amplitude. Sound can only travel through a medium (substance) while light can travel through empty space. Sound is a form of mechanical energy caused by vibrations of matter.

## Why do I hear thunder when it’s sunny?

The high humidity, in conjunction with warm temperatures, creates massive amounts of warm, moist air rising into the atmosphere, where it can easily form a thunderstorm.

## What causes lightning to strike a person?

Direct Strike A person struck directly by lightning becomes a part of the main lightning discharge channel. Most often, direct strikes occur to victims who are in open areas. The heat produced when lightning moves over the skin can produce burns, but the current moving through the body is of greatest concern.