# Why do sound waves move slower than light waves or spectrums?

## Best Answers

All electromagnetic waves-in all frequencies and wavelengths-are moving in a constant speed, 300000000 m/s (in vacuum). That's why we denote the speed of electromagnetic waves with c, not v. It is definitely slower in air. But, it is only 90000 m/s slower than in vacuum. So, the speed of light in air is 299910000 m/s. read more

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Sound waves are longitudinal waves. They need a medium to travel. In this case, it is the air.Source: Longitudinal Waves In the gif (I hope it plays), you can see the particles move back and forth. read more

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Light waves (which are electromagnetic radiation) can travel with or without a medium (in a vacuum or in space) eg: our radio and wireless signals, light rays from the Sun etc; However, sound waves require a medium to travel, as sound energy can only propagate when molecules vibrating at their normal frequencies are disturbed and start to vibrate with more displacement which causes collision between neighbouring molecules and transfer of energy along the medium. read more

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yes because light waves travel at the speed of 300,000 and sound waves travel 50,000 km per second. read more

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