Types of Energy transfer by heating
- Created by: SkyBlade16359
- Created on: 24-05-16 18:26
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- Energy transfer by heating
- 1.4 Conduction
- Occurs mainly in solids
- Metals
- free electrons gain kinetic energy and move through metal
- Transfer energy by colliding with other particles
- free electrons gain kinetic energy and move through metal
- Metals
- When one end is heated it gains kinetic energy which is passed onto neighbouring particles
- free electrons gain kinetic energy and move through metal
- Transfer energy by colliding with other particles
- free electrons gain kinetic energy and move through metal
- Insulators
- Poor conductors
- Wool,fibreglass (they contain lots of trapped air)
- Poor conductors
- Occurs mainly in solids
- 1.5 Convection
- Occurs in fluids
- Fluid is heated & expands
- Becomes less dense
- *rises*
- Cools & becomes denser
- *sinks*
- Fluid is heated & expands
- Becomes less dense
- *rises*
- Cools & becomes denser
- *sinks*
- *sinks*
- Cools & becomes denser
- *rises*
- Becomes less dense
- Fluid is heated & expands
- *sinks*
- Cools & becomes denser
- *rises*
- Becomes less dense
- Can be on very small/large scale
- Radiation
- 1.1 Infrared radiation
- Part of electromagnetic spectrum
- Just beyond visible light
- Makes skin feel warm
- All objects emit it
- The hotter the object, the more it emits
- Part of electromagnetic spectrum
- 1.2 Surfaces and radiation
- Dark matt surfaces are good absorbers and emitters
- Black matt objects transmit energy and cool down quicker than shiny white objects
- Light shiny objects are good reflectors
- Black matt objects transmit energy and cool down quicker than shiny white objects
- Dark matt surfaces are good absorbers and emitters
- 1.1 Infrared radiation
- 1.4 Conduction
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