# Physics 1A - Energy

### Description

GCSE Physics. Mind Map of Section 1A in the CGP books - Energy.
Mind Map by Zaki Rizvi, updated more than 1 year ago Created by Zaki Rizvi over 8 years ago
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## Resource summary

Physics 1A - Energy
1. Convection
1. Involves Particles
1. Mainly Liquids and Gasses
1. Hotter Particles lose Density and start to rise, taking their heat energy with them
2. Conduction
1. Involves Particles
1. Mainly Solids
1. Collisions of particles
1. Can be emitted by solids, liquids or gasses
1. Emission of EM waves
1. Matt Black = Absorb
1. Shiny White = Reflect
2. Condensation + Evaporation
1. Condensation = Gas →Liquid
1. Evaporation's the opposite
2. Factors increasing Rate of Evaporation
1. High Temp
1. Low Density
1. Large Surface Area
1. More Airflow over liquid
2. Factors increasing Rate of Condensation
1. Low Temp (of Gas)
1. Low Temp (of Surface)
1. High Density
1. Less Airflow
2. Specific Heat Capacity
1. How much energy stuff can store
1. E = M x C x θ
1. Energy Transferred (J) = Mass (kg) x SHC (j/kg) x Temp Change (°C)
2. Energy Transfer
1. Electric
1. Light
1. Sound
1. Kinetic
1. Nuclear
1. Thermal
1. Gravitational Potential
1. Elastic Potential
1. Chemical
1. GP, EP & Chemical Energy are stored energy waiting to be transferred into another type
1. Energy can't be created or destroyed
2. Efficiency
1. Efficiency = Useful Power Out ÷ Total Power In
1. For Energy, Just replace 'Power' with energy
2. Efficiency can be given as a decimal or percentage
3. Cost of Energy
1. Energy = Power x Time
1. Units = kW x Hours
1. Units = kWh
2. Cost = Energy x Price p/ Unit
1. Energy = No. of Units

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