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Waves - Coggle Diagram
Waves
Types of waves
Transverse
Particles vibrate perpendicular to wave direction
Longitudinal
Particles vibrate same direction as the wave
Sound
4.5 Exploring
Reflection
Wave onto the boundary will bounce off at the same angle.
Combining waves
Superposition
4.1 Sound
Sound needs a medium
Substance (gas, liquid, solid)
Frequency
Number of waves every second
Measured in Hz
Human hearing
20,000 - 22,000hz
Ultrasound
Medical
Dirty metal objects
Jewellery
4.2 Sound Systems
Amplifier
Increase electrical signal
Loudspeaker
Recieves electrical signal and creates sound
Microphone
Receives sound and emits electrical signal
Diaphragm
Electrical coil + magnet
4.3 Light and colour
Different wavelength and different frequency
red
Long wavelength and low frequency
Blue
Short wavelength and high frequency
Ultraviolet
Healthy for vitamin D
Sunburn, skin cancer
Infrared