# Waves😉

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• No, but we can go to the mall see when most people think of waves they think of going to the beach near an ocean but never think of the parts of the wave.
• ﻿mom can we go to the beach to see the waves
• ﻿the top of the wave is called crest and the bottom is the trough and the distance between crest and crest or trough and trough is called wave length. This is a transverse wave. A transverse wave is a wave that goes up and down or side side in right angles. There is also the undisturbed level which is the middle of the wave or the medium
• ﻿mommy what are the parts of a wave?
• This is a mechanical wave which needs mater or medium to transfer energy unlike electromagnetic which don't.﻿
• ﻿What kind of wave is this?
• ﻿A compressional wave which is also known as a longitudinal wave is a mechanical wave in which matter in medium moves forward and backward along same direction that the wave travel.
• ﻿think of these chairs as compressional waves when they're together there is compression but when they are apart there is rarefaction which is where the particles are spread apart
• I'm confused, can you give me an example﻿
• lets use your slinky as an example when it is shook from end to end then held at rest is has become in a resting position also known as the equilibrium. But when the slinky is pulled to its maximum extent that is its amplitude which is the maximum extent of the vibration
• ok mom I'm starting to get it now
• ﻿Well it doesn't matter these things are everywhere we go and all around us
• ﻿Lets use this telephone as an example of frequency, matter and energy. Matter is when something occupies space which this telephone does but it the telephone starts ringing and you hear it that is an example of frequency because frequency is the rate at which a vibration occurs . Now for energy, it is in this phone because it has electrical cords in it which provides for it to have energy and work
• ﻿yes but remember the importance of waves
• mom this phone is old how in the world can it still have frequency, energy AND matter﻿
• ﻿Can we go to the beach now
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