Flashcards
Waves and radiation
Cards in this deck (66)
- 1What do waves transferEnergy
- 2Wavelength is measured in whatMetres M
- 3What is lambdaThe symbol of wavelength
- 4What is wavelengthWavelength is the distance between one part from a wave to the end part of the wave
- 5What is the top part of a wave calledCrest
- 6What is a troughThe bottom part of a wave
- 7How many Types of waves are there2
- 8What speed does light travel at3 x 10^8
- 9What is transverse wavesTransverse waves are waves that move in direction of a right angle to the way in which the particles are vibrating.
- 1090° waves is calledTransverse waves
- 11Sound waves are what examples of wavesLongitudinal
- 12More energy means _____ frequency of wavesMore
- 13A type of longitudinal wavesSound waves
- 14In __________________ waves , the particles vibrate in the same direction.Longitudinal
- 15What is frequency measured in?Hertz
- 16When calculating the frequency or time, the time has to be measured inSeconds
- 17Frequency formulaF=number of waves / time
- 18Two ways to increase energy in wavesIncrease the amplitude and waves
- 19Symbol of speedV
- 20Symbol of frequencySmall f
- 21What waves vibrate parallelLongitudinal
- 22What waves vibrate perpendicularTransverse
- 23Symbol for timeSmall t
- 24What kind of waves is soundLongitudinal
- 25What speed does sound travel at340m/s
- 26Speed travels differently in different materials True / falseTrue
- 27Is there sound in spaceNo
- 28What shows the sound of a wave formAn oscilloscope
- 29What does the frequency of a sound indicatesThe pitch
- 30Amplitude tells us how ____ the sound isLoud
- 31A higher amplitude means a ________ soundLower
- 32A higher frequency means a ______________ pitchHigher
- 33Frequency range of human hearing20 hz - 20, 000hz
- 34Frequency range of elephant hearing14 hz - 12,000 hz
- 35Frequency range of bats700hz - 200,000hz
- 36How can we measure soundUsing the decibel scale
- 37The higher the number on a decibel scale , the greater the ________Sound level
- 38What is noise pollutionAny unwanted or disturbing sounds
- 39Who does noise pollution affect?Human and animals
- 40How to protect human hearingWear earplugs and avoid noisy places
- 41Things that absorb sound really goodWood, cotton
- 42Frequency above 20000 hz are called ______Ultrasounds
- 43Can we hear ultrasoundNo
- 44Ultrasound are whatFrequency above 20000hz
- 45Uses of ultrasoundTo monitor unborn babies development
Diagnosing health issues
Sonar - 46What is amplitudeThe height of wave for the centre line to the crest or trough
- 47What is the electromagnetic magnetic spectrumA group of transverse waves that all travel at the speed of light
- 48Speed of light3 x 10^8
- 49Gamma rays have ___ wavelength and ___ frequencyShort …….. high
- 50What is refractionRefraction is when light travels from one material to another resulting in a change of speed and often a change in direction
- 51Two types of lensesConvex and concave
- 52Convex lensesBrings rays closer together
- 53Concave lensesBring rays apart from each other
- 54What makes up matterAtom
- 55Positive chargeProtons
- 56ElectronsNegative charge
- 57NeutronsNeutral charge
- 58Where are proton and neutron found inThe nucleus
- 59What orbits around the nucleusElectrons
- 60How many types of nuclear radiation3
- 61What is called helium nucleusAlpha
- 62Moving electronsBeta
- 63Electromagnetic radiationGamma
- 64What can be stopped by a thin sheet of paperAlpha
- 65What can be stopped by a few cm of leadGamma
- 66What can stop betaA few mm of aluminium
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- Nat 5 Physics Flashcards on Waves and radiation , created by Toluwani Anne Ogunsola on 12/09/2024.
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- Toluwani Anne Ogunsola
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