Light and Sound - Reflection and Refraction

Question	Answer
What type of wave is a sound wave?	Longitudinal
Which example proves light is faster than sound?	We see lightning before hearing thunder
Which of these can happen to light waves?	Reflected, refracted and diffracted (spreading out of waves after the pass through a gap)
What is law of reflection?	The angle of incidence is always the same as the angle of reflection
What is dispersion?	The splitting of light into the colours of the rainbow
Which colour of light is refracted the least?	Red
What type of wave is a light wave?	Transverse
How do we calculate refractive index?	N = sin i / sin r
In which does light travel the fastest?	Air
Through which medium does sound travel the fastest?	Solid

Resource summary

	Created by lily bevan over 7 years ago