Wave – a movement of energy through… …A medium – the matter (solid liquid or gas) the wave moves through… Mechanical Waves 1. Transverse Waves – Ocean.

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Presentation transcript:

Wave – a movement of energy through… …A medium – the matter (solid liquid or gas) the wave moves through… Mechanical Waves 1. Transverse Waves – Ocean / water waves 2. Longitudinal Waves – Sound waves …A vacuum – as in empty space, yes, outer space. Electromagnetic Waves – Light – Micro(waves) – Radio – Ultraviolet – Infrared – Gamma – X-rays We will talk more about these later…. Take notes!

Transverse Wave - A wave whose medium to move perpendicular to the direction of the wave Don’t draw, just look

Transverse Wave - A wave whose medium to move perpendicular to the direction of the wave Crest = the “top” of the wave Trough = the “bottom” of the wave. Think farms, pigs Amplitude (labeled “a”) = the energy of the wave. – From resting / equilibrium position to crest / trough – NOT CREST TO TROUGH! Draw THIS!! Resting / equilibrium position

Transverse Wave - A wave whose medium to move perpendicular to the direction of the wave Wavelength – the length of the wave – Symbol is Greek lowercase lambda – λ – (think upside down “y”) – Measured in meters – (m) – From crest to crest, trough to trough, or A resting / equilibrium position to the next full cycle Don’t Re- draw, but there is new info.. Resting / equilibrium position

Longitudinal Wave - A wave whose medium to move parallel to (in the same as) the direction of the wave Don’t draw, just look. PPT should show gif.

Longitudinal Wave - A wave whose medium to move parallel to (in the same as) the direction of the wave Draw This! Make sure your comp. are drawn thick! Crest = Compressions Trough = Rare factions Amplitude = the energy of the wave. – How tightly packed the compressions are… – Think about squeezing more and more slinky coils

Longitudinal Wave - A wave whose medium to move parallel to (in the same as) the direction of the wave Wavelength – the length of the wave – Symbol is Greek lowercase lambda – λ – (think upside down “y”) – Measured in meters – (m) – From compression to compression – trough to trough – The beginning/middle/end of any compressions or rarefaction to… – the same or corresponding beg./mid/end of next compression/ rarefaction Don’t Re- draw, but there is new info..

Period – the amount of time it takes to complete 1 wave or 1 cycle. Period is time! The standard unit is seconds. The symbol is a capital letter-t: T Period for a minute is… T = 60 s Period for an hour is T = 3600 s

Frequency– the number of waves or cycles complete in 1 second. Just Watch PPT gif of a transverse wave with an increasing frequency.

Frequency– the number of waves or cycles complete in 1 second.

Frequency and Period look…

Velocity of a Wave