467865
Description
Mind Map by zoestevens__, updated more than 1 year ago
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Created by zoestevens__
almost 11 years ago
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P1
- Energy Transfer by Heating
- Infrared radiation
- Can detect with skin- will keep you warm
- All objects emit (give it out)
- more heat = more i.r
- Can travel through a vacuum (space) - this is how we get energy from the sun
- Can detect with skin- will keep you warm
- Surfaces and radiation
- Dark, matte surfaces ABSORB i.r... it will heat up quicker than shiny white
- Dark, matte surfaces EMIT i.r ... it will cool down quicker than shiny white
- Shiny white REFLECT i.r
- Dark, matte surfaces ABSORB i.r... it will heat up quicker than shiny white
- States of matter
- Solid- particles vibrate in fixed position (fixed shape)
- Liquid- particles have contact but no fixed shape so can flow
- Gas- far apart and random. Smallest mass.
- Solid- particles vibrate in fixed position (fixed shape)
- Conduction
- mainly in solids
- metals are best conductors
- Wool and fibreglass are good insulators
- Free electrons transfer energy when they collide
- Non metals are bad- no free electrons
- mainly in solids
- Convection
- Circulation of a fluid caused by heat
- Heat makes it less dense
- less dense- rises
- cools, condenses, falls
- Circulation of a fluid caused by heat
- Evaporation
- Liquid to gas
- causes cooling
- increase by: surface area, temp.
- Liquid to gas
- Condensation
- Gas to liquid
- increase by: surface area and temp.
- found on cold surfaces
- Gas to liquid
- Infrared radiation
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