3.3 know the definitions of amplitude, wavefront, frequency, wavelength and period of a wave
3.4 know that waves transfer energy and information without transferring matter
3.5 know and use the relationship between the speed, frequency and wavelength of a wave:
wave speed = frequency × wavelength
v = f × λ
3.6 use the relationship between frequency and time period: frequency = 1/time period
f = 1/T
3.7 use the above relationships in different contexts including sound waves and electromagnetic waves
3.2 explain the difference between longitudinal and transverse waves
3.9 explain that all waves can be reflected and refracted.
3.8 explain why there is a change in the observed frequency and wavelength of a wave when its source is moving relative to an observer, and that this is known as the Doppler effect (May be covered in Y10)
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104 - Wave Period and Frequency In this video Paul Andersen explains how ...
104 - Wave Period and Frequency
In this video Paul Andersen explains how the period is the time between wave and the frequency is the number of waves per second. ...Period is measured in seconds and frequency is measured in Hertz. Wave period and wave frequency are reciprocals of one another. After watching this video you will be able to determine the period (and therefore the frequency) using a position vs. time graph of a wave.
GCSE Physics - Intro to Waves - Longitudinal and Transverse Waves #61
This video covers: - What waves are - How to label a wave. E.g. amplitude, ...
This video covers: - What waves are - How to label a wave. E.g. amplitude, wavelength, crest, trough and time period - How to calculate wave speed - The difference between transverse ...and longitudinal waves
General info: - Suitable for all GCSE and IGCSE courses - Suitable for higher and foundation tiers - Suitable for triple and combined science
Exam board specific info: AQA - Everything is relevant to your course! IGCSE Edexcel - Everything is relevant to your course! Edexcel - Everything is relevant to your course! OCR 21st Century - Everything is relevant to your course! OCR Gateway - Everything is relevant to your course![+] Show More
3 Waves iGCSE Topic Revision
iGCSE Edexcel Physics revision summaries (there are some sub section videos ...
iGCSE Edexcel Physics revision summaries (there are some sub section videos as well on this channel).
They go through the basics of each area in turn so you can pause and ...listen.[+] Show More
Wavespeed - GCSE Science Required Practical
Mr Rees shows you how to measure wavespeed on water and string. 00:00 ...
Mr Rees shows you how to measure wavespeed on water and string. 00:00 Ripple tank 07:10 Stationary wave on a string
a good video and audio example of the Doppler effect. the sound that is ...
a good video and audio example of the Doppler effect. the sound that is perceived changes because of a moving object. higher frequency of an object moving towards listening, ...and lower frequency as object moves away.[+] Show More
The Doppler Effect: what does motion do to waves?
A visual explanation of the Doppler effect. Subscribe: ...
Video from The Big Bang Theory is the property ...of its creators, used here under fair use.[+] Show More
Transverse and Longitudinal Waves
This is a typical quick classical Physics demo of a slinky to show ...
This is a typical quick classical Physics demo of a slinky to show longitudinal and transverse waves. I have put a scale of 0.5m on the wavelength so you can ...work out a whole wavelength. Also you have a small amplitude scale to show the energy of the wave.[+] Show More
Physics - Waves - Diffraction
A high school GCSE and iGCSE science physics revision video all about ...
A high school GCSE and iGCSE science physics revision video all about diffraction of waves. Wavelength and the size of the gap are improtant factors. For AQA, Edexcel and OCR ...exam boards.[+] Show More
GCSE Physics - Refraction of waves #63
In this video we cover the following: - What 'refraction' means - When ...
In this video we cover the following: - What 'refraction' means - When refraction occurs - How to draw ray diagrams for the refraction of light - The idea that during refraction, the wavelength ...of a wave stays constant, and it is the wave speed that changes
Exam board specific info: AQA - Relevant to all courses! IGCSE Edexcel - Relevant to all courses! Edexcel - Separate science only. Both foundation and higher tier OCR 21st Century - Complicated mix OCR Gateway - Separate science only. Both foundation and higher tierr
Dispersion is a quite complex idea where rays of light are refracted by a ...
Dispersion is a quite complex idea where rays of light are refracted by a prism twice.
This is made more complex as the two sides are the equilateral triangle are ...at 60 to each other. If we use white light which ranges from 400nm to 700nm (nanometres or 1x10-9m) we find that each wavelength or “colour” ROY-G-BIV is refracted just slightly differently to form a “Spectrum” of light.
When light travels through a vacuum it is moving at the “speed of light” or “c” or 3 x 108m/s
If the light enters a denser medium such as air it will slow down. This is called refraction. If a wave enters the medium at an angle it will also change direction. The reverse is true and waves which speed up, also refract.
Water waves behave in the same way as they get to shallow water, they slow down and the wavelength becomes shorter.[+] Show More
Mechanical Model for Longitudinal Waves
In a longitudinal wave the particle displacement is parallel to the ...
In a longitudinal wave the particle displacement is parallel to the direction of wave propagation. The animation at right shows a one-dimensional longitudinal plane wave propagating (moves) down a tube. ...The particles do not move down the tube with the wave; they simply oscillate back and forth about their individual equilibrium positions. They experience compression and rarefaction.
Pick a single particle and watch its motion. The wave is seen as the motion of the compressed region (ie, it is a pressure wave), which moves from left to right.
Using a slinky you can try this out. This model shows how the air molecules compress and expand when we talk. Rarefaction is an expansion of particles. Compression is closer together.
Common examples include;
Sound slinky springs seismic p waves.
Longitudinal waves cannot be polarised as unlike transverse waves they don’t travel side to side.[+] Show More