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6.6 Electromagnetic Waves June 22, 2022 Think about: •How well behaved you are •How good you are at science •How much you like chocolate hob nobs

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Page 1: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

6.6 Electromagnetic WavesApril 10, 2023

Think about:•How well behaved you are•How good you are at science•How much you like chocolate hob nobs

Page 2: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Aims

• Describe visible light as part of the electromagnetic spectrum

• State other types of radiation

Page 3: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 4: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 5: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 6: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 7: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 8: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Electromagnetic waves

Page 9: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Travel through empty space

Page 10: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Travel at 300 000 km/s

Page 11: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Transverse waves

Page 12: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

They transfer energy

Page 13: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Light vs Sound

Example of wave LIGHT SOUNDType of wave

Speed in air / km/s

Material of medium

Page 14: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Light vs Sound

Example of wave LIGHT SOUNDType of wave Transverse Longitudinal

Speed in air / km/s

300 000 340

Material of medium

No material required

Solid, liquid, gas

Page 15: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Example of wave LIGHT SOUNDType of wave

Speed in air / km/s

Material of medium

Example of wave LIGHT SOUNDType of wave

Speed in air / km/s

Material of medium

Page 16: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Electromagnetic radiation actually comes in packets

or lumps. I call these packets ‘quanta’. A quanta of light is called a photon.

Nobel prize please…

Page 17: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

The higher the frequency, the more energy the photon has

Page 18: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Intensity

Energy of each photonNumber of photons arriving each second

Page 19: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

The electromagnetic spectrum

Page 20: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 21: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 22: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 23: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Radio waves

Page 24: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Radiowaves

• Communications: TV, mobile phones, local radio, police

Page 25: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Microwaves

Page 26: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Microwaves

• Microwaves ovens, communicating with satellites, RADAR

Page 27: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Infrared

Page 28: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Infra-red

• Search and rescue teams, detect circulation problems, (cancer, arthritis), astronomy, burglar alarms

Page 29: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Light

Page 30: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Ultraviolet

Page 31: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

UV

• Produce vitamin D in our skin, suntan, skin cancer

Page 32: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

X-rays

Page 33: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

X-rays

• X-rays (bones, teeth), check welds and joints, food

Page 34: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Gamma rays

Page 35: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Gamma rays

• Make Hulks, sterilise food and utensils, tracers, radiotherapy

Page 36: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

RECALL THE DETRIMENTAL EFFECTS OF EXCESSIVE EXPOSURE OF THE HUMAN BODY TO ELECTROMAGNETIC WAVES

3.13

Page 37: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 38: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 39: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 40: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 41: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 42: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

Make an EM spectrum booklet

Guest starring Mr. Simon Porter

Page 43: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 44: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 45: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 46: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 47: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 48: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 49: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 50: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 51: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 52: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 53: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 54: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 55: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 56: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 57: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 58: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs
Page 59: 6.6 Electromagnetic Waves 2 January 2014 Think about: How well behaved you are How good you are at science How much you like chocolate hob nobs

The EM spectrum

• You now have seven sections to fill in with information regarding the seven types of electromagnetic radiation

• Include uses, dangers, detectors, examples and origins if you can

• The better you make it the better it will help your revision


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