Waves

What is a wave?

Energy that is carried but not matter

medium

the material that the wave travels through

mechanicle wave

moves energy through a medium by vibrating particles

transverse

the transfer of energy in a motion that is to the direction of the wave

Longitudinal

where the disturbance moves in the same direction as the wave

What moves forward- energy, matter, or both

the energy moves forward in a speaker when the volume rises

water wave

slinky pushed and pulled

sound wave

rope shaken side-side

You turn up the volume on a speaker

Amplitude

Singing a higher note

Frequency

shaking a rope faster

frequency

a wave moves from one medium to another

wave speed changes & wavelength changes

why mechanical waves cannot travel in a vacuum

There’s no medium in a vacuum

Vacuum

a space with no matter

reflection

Wave bouncing off a surface

refraction

a wave bending when it changes

absorption

a wave’s energy being taken in by a material

sunglasses

Absorbed and transmitted

mirror

Reflected

prism

refracted

black pavement on a hot day

absorbed

stained glass window

transmittited (and some absorbed)

what doesn’t affect the speed of a mechanical wave

Frequency

what wave interaction causes rainbows

Reflection

a louder sound has greater:

amplitude