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Physics-P1:
· Energy for the home. · Seismic wave
· Insulation. · Global warming and
· Specific heat capacity the hole in the ozone
& specific latent heat. layer.
· The Electromagnetic
Spectrum.
· Analogue & Digital
signals.
· What can happen to a
wave.…read more

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Energy for the home.
Insulation.
· Energy always flows from a
warmer body to a cooler body.
· Heat is a form of energy
(measured in Joules)
· Temperature is a measure of
how much heat an object has
(measured in °C)
· Measuring Temperature ­
Thermometer; Thermocouple;
Resistance thermometers;
Thermo grams.…read more

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Insulation
· Cavity Wall Insulation
· Loft Insulation All these trap air ­
TRAPPED AIR IS A POOR
· Double Glazing CONDUCTOR OF HEAT
· Draught excluders
· Silver foil behind
SILVER FOIL REFLECTS
radiators RADIATED HEAT BACK
INTO THE ROOM…read more

Slide 5

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Specific heat capacity & specific latent
heat.
· SHC is the heat · SLH is the heat
needed to raise the needed to change
temperature of 1kg the state of 1kg
of a substance by 1° of a substance.
Celsius.
· Q=mxl
· Q = m x c x…read more

Slide 6

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The Electromagnetic Spectrum.
Long Wave, Medium Wave, FM
· Radio Waves
Cooking and Communication
· Microwaves
Remote Controls and Grills/Heaters
· Infra red
· Visible Light Very narrow range, ROYGBIV, lasers
· Ultra Violet Sunburn, Skin Cancer, Sun Beds
Penetrates body, cause cancer,
· X-Rays Look at broken bones
Nuclear emission, cause cancer,
· Gamma rays treat cancer…read more

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