What Is Sound?: How Fast Is Sound?

The video explains why we see lightning before hearing thunder, despite both occurring simultaneously. This is due to light traveling much faster than sound. It also covers factors affecting the speed of sound, such as temperature and the medium through which it travels, with sound moving fastest through solids, slower through liquids, and slowest through gases.

Why do we see lightning before we hear thunder?

• Because sound travels faster than light

• Because thunder is quieter than lightning

• Because lightning is brighter than thunder

• Because light travels faster than sound

How much faster does light travel compared to sound?

• About 800 times faster

• About 8,000 times faster

• About 800,000 times faster

• About 80,000 times faster

Which factor does NOT influence the speed of sound?

• Medium of travel

• Temperature

• Color of the sound

• Humidity

Through which medium does sound travel the fastest?

• Gases

• Vacuum

• Liquids

• Solids

On which type of day does sound travel faster?

• A rainy day

• A warm day

• A windy day

• A cold day