energy - all waves transfer what?, Transverse waves - what wave moves perpendicular to the direction in which the particles are vibrating (i.e. a water wave moves forward but the particles move up and down)., Longitudinal waves - what wave moves parallel to the direction in which the particles are vibrating (i.e. a sound wave moves forwards and the particles vibrate forwards and backwards)., a longitudinal wave. - A sound wave is an example of, of transverse waves. - Electromagnetic radiation and water waves are examples of, Wavelength, λ - what is Distance from a point on a wave to an identical point on the next wave. Measured in metres (m), Amplitude - what is Size of maximum disturbance from the centre line, Period, T - what is Time taken for one full wave to pass a point. Measured in seconds (s), Wave speed, v - what is Distance travelled by a wavelength in one second. Measure in metres per second (ms-1), Frequency, f - what is Number of waves passing a fixed point every second. Measured in hertz (Hz), Diffraction - What happens when a wave passes through a gap or passes by an object., More - Long wavelengths diffract, Less - Short wavelengths diffract, Gamma Rays, X-Rays, Ultraviolet, Visible, Infrared, Microwaves, Radio waves  - Know the relative frequency and wavelength of bands of the electromagnetic spectrum, the speed of light: 3 × 108 ms-1 - All waves in the electromagnetic spectrum are transverse waves and travel at, Refraction - what occurs when light passes from one medium to another, due to a change in the properties of that medium., Speed decrease, Wavelength decreases, Angle of refraction is less than angle of incidence when angle of incidence is greater than 0 degrees - For a wave entering a more dense medium:, Speed increases, Wavelength increases, Angle of refraction is greater than angle of incidence when angle of incidence is greater than 0 degrees - For a wave entering a less dense medium:,

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