# Physics P1

### Description

Physics P1 GCSE Revision. Heating Houses created so far.
Mind Map by themomentisover, updated more than 1 year ago
 Created by themomentisover over 8 years ago
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## Resource summary

Physics P1
1. Heating Houses
1. Energy Flow
1. Heat energy flows from a warmer body to a colder body
1. When this happens, the temperature of that object decreases
2. Measuring Temperature
1. a thermogram uses colour to show temperature; hottest ares are white/yellows, coldest are black/dark blue/purple
1. Temperature is a measurement of hotness on an arbitrary scale. You do not need to use a thermometer
1. When the temperature of a body increases, the average kinetic energy of the particles increases
2. Heat is a measurement of internal energy measured on an absolute scale
3. Specific Heat Capacity
1. All substances have a property called SHC
1. It is the energy needed to raise the temperature of 1kg by 1 degree Celsius
1. It is measured in joules per kilogram degree Celsius (J/kg degree Celsius). It differs for different materials
2. When a object is heated and its temperature rises, energy is transferred
1. The equation for energy transfer by SHC is: energy transferred = mass x SHC x temperature change
3. Specific Latent Heat
1. It is the energy needed to melt or boil 1 kg of the material
1. It is measured in joule per kilogram (J/kg) and differs for different materials and each of the changes of state
1. The equation for energy transfer by specific latent heat is: energy transferred = mass x specific latent heat
2. When an object is heated and it changes state, energy is transferred, but the temperature remains constant
1. This is because when a substance changes state, energy is needed to break the bonds that hold the molecules together

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