Flashcards
Physics Topic 6 GCSE (ONLY NOTES FOR MOCKS)
Flashcards do conjunto (27)
- 1What happens when a wave passes through a medium?The particles of the medium oscillate and transfer energy between each other. But overall particles stay in the same place - only energy is transferred.
- 2Amplitude:Height of the wave
- 3Wavelength:Distance between the same point on two adjacent points.
- 4Frequency:Number of complete waves passing a certain point per second
(Measured in hertz) - 5Time period equation:Time period = 1 / Frequency
- 6Wave speed equation:Wave speed = Frequency x Wavelength
- 7Transverse waves key features:- Sideways vibrations
In transverse waves the oscillations are perpendicular to the direction of energy transfer.
Example - Electromagnetic waves. - 8Longitudinal waves key features:- Parallel Vibrations
In longitudinal waves the oscillations are parallel to the direction of energy transfer.
Example - Sound waves - 9Law of reflection:Angle of incidence = Angle of reflection
- 10What is the normal?The normal is an imaginary line that's perpendicular to the surface at the point of incidence.
(Dotted Line). - 11Refraction:When a wave crosses a boundary between materials at angle and it changes direction.
- 12What happens to wavelength and frequency when it is refracted?Wavelength changes.
Frequency stays the same. - 13What happens to refraction when there is high speed?Faster Speed = More Refracted
- 14Investigating Light Practical Method:Place a transparent rectangular block on paper and trace around. Use a laser to shine a ray at the middle of one side of the block.
Trace the incident ray and mark where the light emerges. Remove block from paper and draw refracted wave too.
Draw the normal at the point where the light ray entered the block. Use angle to measure angle of incidence and angle of reflection.
Repeat using different materials. Keep the incident angle the same throughout. - 15What is visible light made out of?Visible light is made out of a range of colours.
= Visible Light Spectrum - 16Visible light (Key INFO):- Different objects absorb, transmit and reflect different wavelengths of light in different ways.
Colour and transparency depend on absorbed wavelengths. - 17White objects (VS):White objects reflect all wavelengths of visible light equally.
- 18Black objects (VS):Black object absorb all wavelengths of visible light
- 19Transparent/Translucent objects (VS):Transparent/translucent objects transmit light.
- 20What do colour filters do?Colour filters only let through particular wavelengths.
= COLOUR FILTERS are used to filter out different wavelengths of light. - 21What does every object absorb and emit?Infrared Radiation
- 22What happens to the IR Radiation as an object gets hotter?Emitting of IR radiation increases.
- 23What is IR radiation when an object is at a constant temperature?Objects at a constant temperature emit infrared radiation at the same rate they are absorbing it.
- 24Which one is better at absorbing and emitting radiation: Black or white objects?A black surface is better at absorbing and emitting radiation than a white surface.
- 25Which one is better at absorbing and emitting radiation? Matt or shiny surfaces?A matt surface is better at absorbing and emitting radiation than a shiny one.
- 26Define a perfect black body:A perfect black body is an object that absorbs all of the radiation that hits it. No radiation is reflected or transmitted.
- 27As temperature of an object increases...Intensity of every emitted wavelength increases.
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- Descrição
- GCSE Physics FlashCards sobre Physics Topic 6 GCSE (ONLY NOTES FOR MOCKS), criado por Haaris Mahmood em 17-01-2023.
- Criado por
- Haaris Mahmood · jan 2023
- Atualizado
- 17 jan 2023
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