Flashcards
Physics
Flashcards do conjunto (27)
- 1Transverse WavesMove side to side in direction of travel
- 2Longitudinal WaveMoves backward and forward
Compression and rarefaction - 3Wave: SpeedMetres per second (m/s)
- 4Wave: FrequencyNumber of waves passing any point per second
Hertz (Hz) - 5WavelengthDistance between a point and equivalent point
- 6AmplitudeMax distance highest point is from rest position
- 7Wave Equationspeed = frequency x wavelength
v = f - 8ReflectionWaves reflect at same angle strike
- 9RefractionPlastic or glass slows wave
change direction - 10Wave OscillationTravel from rest point
peak
trough
rest point - 11speed = frequency x wavelengthDistance per second (m/s) = number of oscillations per second (Hz) x Distance between wavefronts (m)
- 12DiffractionWave bends round sides of obstacle
or
spread out through gap - 13Image in Plane Mirror 1
- 14Image in Plane Mirror 21) angle of incidence = angle of reflection
2) incidence ray, reflected ray & normal lie in same plane - 15Rules for Image Size and PositionImage same size as object
Image same depth as object in front
Light passes through mirror at right angle - 16Finding the Position of an Image in a Mirror*
- 17Finding Reflection in Plane MirrorMethod 1
- 18Finding Reflection in Plane MirrorMethod 2
- 19Reflection Essentialsangle of incidence = angle of reflection
- 20Refraction of LightBend effect called Refraction
- 21Refraction of Light: NormalLine at right angle to block
- 22Real and Apparent DepthWater (or glass) looks less deep
Apparent depth less than real depth
Refraction - 23Why Light RefractsLight made up of tiny waves
Travel slower in glass (or water) than air
From one to another looks like beam 'bends' - 24Refractive Index (speed of light)vacuum = 300 000 km/s
air =~ 300 00 km/s - 25Refractive Index (formula)Refractive index = speed of light in vacuum / speed of light in medium
- 26Refraction by Prism 1Prism is triangular block of glass or plastic
Travels out different directions
called deviated - 27Refraction by Prism 2White light through splits into colours in Spectrum
Called Dispersion
Informações
- Descrição
- FlashCards sobre Physics, criado por ralf.slay em 02-10-2013.
- Criado por
- ralf.slay
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