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Energy
Transverse and Longitudinal waves
Light, electromagnetic waves, water wave
Sound, ultrasound, shockwaves
Yes
The speed of light (300,000,000m/s)
What is the difference between transverse and longitudinal waves? (2 marks)
Transverse waves: Vibrations are perpendicular (at 90 degrees) to the direction of travelLongitudinal waves: Vibration is parallel (in line) with the direction of travel
What are the two areas of longitudinal waves? (1 mark)
Compression (where the particles are squashed together)Rarefaction (where the particles are spaced apart)
State 3 properties of waves? (1 mark)
Reflection, refraction and diffraction
Which waves can be used for communication? (4 marks)
Radiowaves - TV and radioMicrowaves - mobile phone and satellite TVInfrared - remote controlsVisible light – photography
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