Light and Waves

Mechanical Waves

A wave that %%requires a medium%% to travel through and transfer energy

Electromagnetic waves

* __do not need a medium__
* __travel through vacuum of space__
* classified according to wavelength

Medium

Matter through which a wave travels

difference between mechanical wave and electromagnetic wave?

%%Mechanical =%% dependent and loser so %%need medium%%

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%%Electromagnetic =%% independent qween who dont need %%no medium%% and use vacuum of space to travel.

Transverse Waves

A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling

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Longitudinal wave

A wave that moves the medium in a direction parallel to the direction in which the wave travels.

(NEVER TOUCH UP AND DOWN)

Surface Wave

Particles of the medium move in a circular motion

Where is the %%Amplitude%% and what is it?

@@Height of Wave from either crest or trough@@ : __kinda think of it as the middle line__

What is the top of wave?

__IT CALLED THE__ __CREST:__

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(SiNcE CREST TOOTHPAST ON THE top, if u want the most sensitve teeth in the world)

What is the bottom of the wave?

^^The TROUGH^^

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u stinky horse (jk i love every animal on earth not insects sorry but like they’re all amazing and god brought them here for reason dont read again go study)

Wavelength

__The distance__ between two identical parts of a wave

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* trough to trough or crest to crest

Frequency

The number of waves that pass a fixed point in a given amount of time.

Wave period

The $time required for the wave crest at point A to point B.$

Frequency Units

Hertz (Hz)

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(ow frequency sounds hurtz mwahahhahahah)

How does frequency relate to wave length?

Higher Frequency = shorter wavelengths

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Lower frequency = longer wavelengths

electromagnetic spectrum

the range of electromagnetic waves placed in a certain order

What makes a radio wave different from a gamma ray?

Radio = LARGEST ALPHA WITH largest Wavelength = not much frequency

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Gamma = Shortest wavelength = higher energy and frequency

Which is in the middle of the electromagnetic spectrum?

visible light

Waveheight

vertical distance between crest and trough

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(ALL THE WAY FROM BOTTOM TO TOP) 👍

the higher the frequency, the ___ the wavelength

SHORTER

the lower the frequency, the ___ the wavelength

LONGER

Sound travels through which waves?

longitudinal waves