Heat

canned_rainbows
Mind Map by canned_rainbows, updated more than 1 year ago
canned_rainbows
Created by canned_rainbows almost 5 years ago
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Heat
1 Heat transfer
1.1 Conduction (contact)
1.1.1 Definition
1.1.1.1 Flow of heat
1.1.1.2 High to low temperature
1.1.1.3 Without movement of matter as awhole
1.1.2 Medium
1.1.2.1 Solids : Best conductors
1.1.2.1.1 Good conductors
1.1.2.1.1.1 E.g. Metals
1.1.2.1.2 Poor conductors (Insulators)
1.1.2.1.2.1 Air
1.1.2.1.2.2 Materials that trap air
1.1.2.1.2.2.1 E.g. foam, feathers
1.1.2.2 Gases : Worst conductors
1.2 Convection
1.2.1 Definition
1.2.1.1 From high to low level
1.2.1.2 Flow of heat
1.2.1.3 Movement of liquids of gases as a whole
1.2.2 Medium
1.2.2.1 Occurs in liquids and gases
1.2.3 Convection current (flow)
1.2.3.1 Hot air rises
1.2.3.1.1 Expands so the air is less dense
1.2.3.2 Cold air sinks
1.2.3.2.1 Contacts so the air is less dense
1.3 Radiation
1.3.1 Definition
1.3.1.1 Flow of heat
1.3.1.2 From high to low temperature
1.3.1.3 By electromagnetic waves
1.3.2 Medium
1.3.2.1 Solids, liquids and gases
1.3.2.2 Can pass through a vacuum
1.3.3 Colours
1.3.3.1 Matte black
1.3.3.1.1 Best absorber and emitter
1.3.3.2 Shiny silver
1.3.3.2.1 Worst absorber and emitter
1.3.3.2.2 Very good refector
2 Heat and its effects
2.1 Expansion and contraction
2.1.1 Expansion
2.1.1.1 Object expand and increase in volume
2.1.2 Contraction
2.1.2.1 Objects contract and decrease in volume
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