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P5.1 - Coggle Diagram
P5.1
Types of waves
Electromagnetic waves are used to communicate
sound waves
sound waves are longitudinal
sound and water waves are mechanical waves
sound properties and uses
what happens when a sound travels across a boundary
when a sound travels from one medium to another its velocity can change causing it to change direction.
this is called refraction
what is an ultrasound
ultrasound is sound of a frequency greater than 20 000 Hz
What is a wave
A wave is an oscillation that transfers energy
How to calculate the velocity of a wave
Wave velocity = Frequency X Wavelength
what happens when a sound hits a solid
after being reflected many times, the sound is absorbed
when a sound is absorbed it makes the particles in the solid vibrate. This can cause the solid to get hotter
