# data[].attributes.body
Wave speed is the speed a wave travels. This statistic can be calculated by frequency times wavelength (V=FW)

# data[].attributes.headline
How the speed of the wave can be changed

# data[].attributes.subject
How the speed of the wave can be changed

# data[].attributes.body
The only way to alter the speed of a wave is by altering the medium. For example, instead of having a sound traveling through the air, you could change it to travel through water.

# data[].attributes.body
Wave speed in sound travels faster in a solid medium such as liquids or gases. When traveling through a medium such as air the wave speed in sound decreases and moves slower to the destination point.

# data[].attributes.body
The sound waves move through each of these mediums by vibrating the molecules in the matter. The molecules in solids are packed very tightly. Liquids are not packed as tightly. And gases are very loosely packed. This means that the gas and liquid give some led way for the sound to move and vibrate through, whereas the solid is packed tightly not leaving much room.

# data[].attributes.body
Miles per second: 186000

Metres per second: 299792458

Miles per hour: 671000000

Kilometres per hour: 1080000000

Parsecs per year: 0.307

From Sun to Earth (1 AU): 8.3 min

# data[].attributes.body
The speed of light is a non changing variable in our universe. It is far faster than the speed of sound, which is why you see something happening afar before hearing it. For example, when you see someone clap across a long hallway, there is a very slight difference in witnessing the clap and hearing it.

# data[].attributes.body
EM spectrum- radiation of certain waves traveling at the speed of light. EM radiation is a stream of Photons,  (The smallest-quantum-unit of light/electromagnetic energy.)

# data[].attributes.body
Radio waves- Photons have the least amount of energy, lowest frequency and longest wavelength. Radio waves have the radiation to transmit the radio to your home/car.

Microwaves- Relatively harmless, long wavelength and slow frequency, radiation powerful enough to cook food.

Infrared Waves- Photons have a higher energy output, shorter wavelength, higher frequency. Infrared waves are used in night vision goggles.

Visible- visible waves are emitted by fireflies, stars, and lightbulbs. Any wave beyond visible light is invisible to the human eye.

UV- Ultraviolet radiation is emitted by the Sun and are the reason skin tans and burns. High frequency, short wavelength

X-Ray-x ray radiation is emitted by x ray machines. It is dangerous for humans to intake which is why precautions are made.

Gamma rays- used to scan your body, emitted by the universe. Highest frequency and shortest wavelength.

# data[].attributes.body
Speed of sound
343 meters per second

# data[].attributes.attachment_link.title
Speed of Sound | Mechanical waves and sound | Physics | Khan Academy