P1.2 Sound Flashcards
What is a wave?
it’s an oscillation or vibration that transfers energy or information. A wave can also be a undulation on the surface on the wa
What do the ripples across a pond and the sound of a guitar have in common?
They are both waves
What are the features of a wave?
amplitude, frequency and wavelength
Name two features of a wave that could be measured by a ruler
amplitude, wavelength
what are extra features of a transverse wave?
trough and peak/crest
if you push the top of a spring a push it foward what wave is created?
longitudinal
how longitudinal wave transfer engery?
a longitudinal wave transfer engery in a straight line forward with compressions and rarefactions
why are the waves in a bath transverse and not longitudinal
because the oscilate up and down
what happens when a wave hits a barrier
it reflects of the surface
what happens when two waves are put together?
they superpose
what is superpose?
this means taht they add up or cancel out. If the waves are in step, they will add together. You will get a wave with a higher hight than before. If they are not in step, then they cancel each other out. The height of a single wave is less than you had before.
What is a sound wave?
A sound wave is a type of mechanical wave that travels through a medium (such as air, water, or solids) by vibrating particles
what does sound travel through?
a medium eg. water, walls, ceiling
What is the fastest (state of matter) medium can sound travel through?
solid
what does a taller wave mean?
louder noise
what does a smaller wave mean?
quieter noise
what does a thinner wave mean?
higher pitch
what does a wider wave mean?
lower pitch
How do you use a oscilloscope?
plug in a microphone and make noise and the wave on the machin’s screen shows you what wave you are making, pitch and sound.
