Flashcards
Physics Core - P1
Cards in this deck (37)
- 1Definition of absorban object absorbs energy when the energy from infrared radiation is transferred to the particles of the object, increasing the temperature of the object
- 2Definition of ampere (amp)unit used to measure electrical current
- 3Definition of amplitudesize of wave oscillations - for a mechanical wave, it describes how far the particles vibrate around their central position.
- 4Definition of angle of incidenceangle between the ray hitting a mirror or lens and the normal
- 5Definition of angle of reflectionangle between a ray reflecting from a mirror and the normal
- 6Definition of The Big Bang Theorytheory that states that the universe originated from a point at very high temperature, and everything in the universe formed as energy and matter exploded outwards from a point and cooled down
- 7CMBR (cosmic microwave background radiation)microwave radiation coming very faintly from all directions of space
- 8Definition of diffractionchange in direction of a wave caused by passing through a narrow gap or round an obstacle such as a sharp corner
- 9Definition of Doppler effectchange in wavelength and frequency of a wave than an observer notices if the wave source is moving towards them or away from them
- 10Definition of electromagnetic radiation (EM)energy transferred as electromagnetic waves
- 11Definition of electromagnetic spectrumelectromagnetic waves ordered according to wavelengths and frequency - ranging from radio waves to gamma rays
- 12Definition of electromagnetic wavesa group of waves that transfer energy - they can travel through a vacuum and travel at the speed of light
- 13Definition of gamma rayradioactive and dangerous to human health
- 14Definition of geothermal power stationpower station generating electricity using the heat in underground rocks to heat water
- 15Definition of incident raythe ray of light hitting a mirror or lens
- 16Definition of infrared radiationenergy transferred as heat - a type of electromagnetic radiation
- 17Definition of jouleunit used to measure energy
- 18kinetic theorymodel used to explain how energy is transferred by particles in a substance
- 19Laterally inverted imageleft and right are reversed when seen in a mirror
- 20Longitudinal wavea wave in which the direction that the particles are vibrating is the same direction in which the energy is being transferred by the wave
- 21Mechanical wavewave in which energy is transferred by particles or objects moving, such as wave on a string or a water wave
- 22National Gridnetwork that distributes electricity from power stations across the country
- 23Definition of oscillatevibration to and fro of particles in a wave
- 24Radio waveUsed to transmit radio and TV
- 25Rarefactionareas of longitudinal wave in which the vibrating particles are spread out more then usual
- 26Ray diagramdiagrams showing how light rays travel
- 27Red Shiftif an object has red shift it is moving away from the observer
- 28refractionchange of direction when a wave hits the boundary between two media at an angle - for example when a light ray passes through air into a glass block
- 29Specific heat capacitya measure of the amount of energy needed to raise the temperature of a 1kg substance by 1C
- 30Transverse wavea wave at which the vibration of the particles are at right angles to the direction in which the wave transfers energy
- 31ultraviolet radiationelectromagnetic radiation that can damage human skin
- 32U-valuea measure of how easily energy is transferred through s material as heat
- 33Virtual imageimage that can be seen but cannot be projected onto a screen
- 34voltagea measure of the energy carried by an electric current
- 35Wattunit of energy transfer
- 36wavelengthdistance between two wave peaks
- 37x-raysused in x-ray photography to generate pictures of bones