Moving heat

Moving heat

1. Conductors- transfer energy through them. ie. copper pan, stone floors.

2. Insulators- keep energy in. ie- wooly jumpers, cotton wool, loft insulation.

3. People are colder in the sea water because the water conducts the heat from the body

4. heat transfer

   • when two places are the same temperature there are no more heat transfers
   • Heat (thermal energy) always moves from hot places to cold places

5. convection

   • happens in liquid and gasses
     • when liquids/ gasses get hot they become less dense
       • this makes them lighter than the surrounding liquid/ gas so the hot liquid/ gas rises. the cold liquid/ gas then sinks to take its place.
         • this creates a convection current