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Infection and response
Organisation
Cell biology
Biological molecules
Homeostasis and response
Responding to change (a2 only)
Energy transfers (a2 only)
The control of gene expression (a-level only)
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
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1f industrialisation and the people: britain, c1783-1885
1c the tudors: england, 1485-1603
Britain & the wider world: 1745 -1901
Inter-war germany
World war one
2n revolution and dictatorship: russia, 1917-1953
World war two & the holocaust
1l the quest for political stability: germany, 1871-1991
The cold war
2j america: a nation divided, c1845-1877
Medieval period: 1066 -1509
The fight for female suffrage
2m wars and welfare: britain in transition, 1906-1957
2d religious conflict and the church in england, c1529-c1570
Britain: 1509 -1745
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16/10/2022
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Thursday 10th September Transverse and Longitudinal Waves ~ Sound Waves Light Waves Ingraved ~Ganna Waves Electromagnetic ~ Microwaves ~ Radiowaves ~ Ultraviolet Light waves are electromagnetic (they can travel through a vacuum) Light waves are transverse (the vibrations are perpendicular to the wave's movement) wavelength Vibrations amplitude → direction → The number travel of Frequency (H₂) second. of waves per Sound waves are mechanical (they travel through a medium) Sound waves are longitudinal (the vibrations are parallel to the waves movement. Compression transverse Light X-Ray Radio Microwave Seismic S wares Rarefraction → Waves Longitudinal Sound Pressure Ultrasound Seismic P waves. movement 5-9-20 waves Properties of Waves Waves they transfer energy from one place to another Wavelength → distance → distance from peak to peak and trough to trough Frequency → number of waves per second. Amplitude height of a wave. ✓ I Amplitude and wavelength 2 Wavelength of 3 Number 4 Gamma rays 5 Sound waves. waves per second. I ✓ 1 Sound waves → travels, through air, allows us to hear noises. 2 Radio waves can be used to sée. ✓ carry inco between electronic devices/ 3 Seismic waves travels through the ground and causes earthquakes. I 4 Xrays - high energy waves, passes through some solid objects. ✓ 5 Light waves These waves allow us to the 6 Water waves - Can be caused by moon orbiting the Earth or the Earth or by something hitting the surface. ✓ 1 Sound waves → Mechanical/ 2 Radio waves electromagnetic ✓ 3 Seismic Pwave-mechanical ✓ 4 Xrays - electromagnetic / 5 hight waves - electromagnetic. ✓ 6 Water waves - mechanical. 1 Loud 2 Low pitch quiet m w low pitch loud high pitch s decrease in Increase in prequency In Longitudinal waves, the vibrations are of travel moving parallel...
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to direction whered in Transverse, they move perpendicularly. Longitudinal waves do not have amplitude or wavelength but transverse do. Longitudinal waves have compression and rovegraction but transvese don't. wavelength