science- heat and temperature
- Created by: Lucy.new
- Created on: 04-05-15 17:49
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- joules (j)
- heat
- degrees celsuis(0c)
- the units for measuring energy
- temperature
- how hot or cold something is
- heat energy and temperature are not the same thing
- thermal enrgey
- another name for heat energy
- heat energy always flows from a hot to a cold object
- the amount of heat energy depends on
- it's temperature
- it's material
- it's mass
- another name for heat energy
- transferred
- moving between two objects
- conductors and insulators
- metals are the best conductors
- some other good conductors are - metal and foil
- bad conductors are called- insulators
- some good insulators are - wool, plastic, wood, paper, air
- insulation is the process of stopping heat escaping
- some good insulators are - wool, plastic, wood, paper, air
- bad conductors are called- insulators
- when solids get hot the particles in them vibrate
- when a liquid gets hot it expands
- radiation
- is when heat is not conducted
- radiation is when a hot object gives of infrared radiation
- this is given off as heat waves
- dark ojects absorb more radiation than light coloured objects
- this is given off as heat waves
- heat waves are reflected by light coloured objects
- radiation is when a hot object gives of infrared radiation
- is when heat is not conducted
- convection
- convection transfer can only happen in liquids
- when particles get hot they gain energy causing them to move around
- the cold particles have less energy so they are more dense
- cold particles= more dense
- meaning they sink
- the movement of cold and hot particles set up convection currents
- cold particles= more dense
- hotter particles= less dense
- meaning they rise
- the cold particles have less energy so they are more dense
- when particles get hot they gain energy causing them to move around
- convection transfer can only happen in liquids
- degrees celsuis(0c)
- the units for measuring energy
- heat
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