Waves

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Whole Topic PLC

Describe waves as either transverse or longitudinal, defining these waves in terms of the direction of their oscillation and energy transfer and giving examples of each
Define waves as transfers of energy from one place to another, carrying information
Define amplitude, wavelength, frequency, period and wave speed and Identify them where appropriate on diagrams
State examples of methods of measuring wave speeds in different media and Identify the suitability of apparatus of measuring frequency and wavelength
Calculate wave speed, frequency or wavelength by applying, but not recalling, the equation: [ v = f λ] and calculate wave period by recalling and applying the equation: [ T = 1/f ]
Identify amplitude and wavelength from given diagrams
Describe a method to measure the speed of sound waves in air
Describe a method to measure the speed of ripples on a water surface
Required practical 20: make observations to identify the suitability of apparatus to measure the frequency, wavelength and speed of waves in a ripple tank and waves in a solid
Describe what electromagnetic waves are and explain how they are grouped
List the groups of electromagnetic waves in order of wavelength
Explain that because our eyes only detect a limited range of electromagnetic waves, they can only detect visible light
HT ONLY: Explain how different wavelengths of electromagnetic radiation are reflected, refracted, absorbed or transmitted differently by different substances and types of surface
Illustrate the refraction of a wave at the boundary between two different media by constructing ray diagrams
HT ONLY: Describe what refraction is due to and illustrate this using wave front diagrams
Required practical activity 10: investigate how the amount of infrared radiation absorbed or radiated by a surface depends on the nature of that surface.
HT ONLY: Explain how radio waves can be produced by oscillations in electrical circuits, or absorbed by electrical circuits
Explain that changes in atoms and the nuclei of atoms can result in electromagnetic waves being generated or absorbed over a wide frequency range
State examples of the dangers of each group of electromagnetic radiation and discuss the effects of radiation as depending on the type of radiation and the size of the dose
State examples of the uses of each group of electromagnetic radiation, explaining why each type of electromagnetic wave is suitable for its applications