The maximum speed of light is 300,000,000meters per second (in a vacuum)
It takes 8 minutes for light to travel from the sun to the Earth
Light travels as waves. These are transverse waves, like the ripples in a tank of water. The direction of vibration in the waves is at 90° to the direction that the light travels.
Light always travels in straight lines but if you look at it up really, really close it will be zig zaggy in shape( but in a ray diagram draw a straight line)
Unlike sound waves, light waves can travel through a vacuum (empty space). They do not need a substance to travel through, but they can travel through transparent and translucent substances.
When light passes from one medium (material) to another it changes speed. This is because the speed of a wave is determined by the medium through which it is passing.
When light speeds up as it passes from one material to another, the angle of refraction is bigger than the angle of incidence. but when it slows down the angle of refraction is smaller than the angle of incidence.
It takes 8 minutes for light to travel from the sun to the Earth
Light travels as waves. These are transverse waves, like the ripples in a tank of water. The direction of vibration in the waves is at 90° to the direction that the light travels.
Light always travels in straight lines but if you look at it up really, really close it will be zig zaggy in shape( but in a ray diagram draw a straight line)
Unlike sound waves, light waves can travel through a vacuum (empty space). They do not need a substance to travel through, but they can travel through transparent and translucent substances.
When light passes from one medium (material) to another it changes speed. This is because the speed of a wave is determined by the medium through which it is passing.
When light speeds up as it passes from one material to another, the angle of refraction is bigger than the angle of incidence. but when it slows down the angle of refraction is smaller than the angle of incidence.
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- The speed of sound in air is 343 m/s
- Sound travels faster in solids than in anything else
- This is because sounds are caused by vibrations and vibrations travel quicker in solids as the particles are closer to each other
- Sound waves are longitudinal waves - the vibrations are in the same direction as the direction of travel.
- The amplitude of the sound wave is the distance of the wave from the centre line. The higher the amplitude, the louder the sound wave is.