4118823
Mind Map by Laura THOMAS0798, updated more than 1 year ago
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Created by Laura THOMAS0798
about 5 years ago
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Description
Heat and Temperature
1 Heat and Temperature
1.1 Heat is a measure of energy
1.2 Temperature is a measure of hotness
1.3 Energy flows from hot to cold
2 Kinetic Theory
2.1 Solids
2.1.1 Strong forces of attraction
2.1.2 Vibrate around fixed positions
2.1.2.1 Low energy
2.2 Liquids
2.2.1 Weaker forces of attraction
2.2.2 Move randomly
2.2.2.1 More energy
2.2.2.2 Slowly
2.3 Gases
2.3.1 Almost no attraction
2.3.2 Move randomly
2.3.2.1 Very fast
2.3.2.2 A lot more energy
3 Conduction
3.1 Occurs
mainly in
solids
3.2 CONDUCTION OF HEAT
3.2.1 Vibrating particles pass on kinetic
energy to particles next to them
3.3 Metals are the best
3.3.1 Free electrons
3.4 Liquids and
gases
conduct heat
much slower
3.4.1 No free electrons
4 Convection
4.1 Occurs in liquids
and gases
4.2 CONVECTION CURRENTS
4.2.1 Particles with a lot of energy
move to the cooler region, and
take their heat with them
5 Heat Radiation
5.1 The emission of
electromagnetic waves
5.2 Depends on the surface
colour and texture
5.2.1 Dark, matte surfaces absorb and emit
5.2.2 Shiny, silvered surfaces reflect heat
6 Condensation and Evaporation
6.1 CONDENSATION
6.1.1 When a gas turns to liquid
6.1.2 Rate will increase if:
6.1.2.1 Temperature is lower
6.1.2.2 Windspeed is less
6.1.2.3 Temperature is lower
6.1.2.4 Density is higher
6.2 EVAPORATION
6.2.1 Liquid to gas
6.2.2 Rate will increase if:
6.2.2.1 Temperature is higher
6.2.2.2 Density is lower
6.2.2.3 Surface area is larger
6.2.2.4 Windspeed is greater
7 Rate of Heat Transfer
7.1 Depends on:
7.1.1 Surface area
7.1.2 Volume
7.1.3 Type of material
7.2 Limiting heat transfer