| A | B |
| 3 types of heat transfer | radiation, conduction, and convection |
| heat transfer | the movement of energy from a warmer object to a cooler object |
| radiation | the transfer of energy through empty space |
| an example of radiation | the heat you feel around an open fire |
| conduction | heat transfer by direct contact of particles of matter |
| an example of conduction | the hot spoon you pick up from boiling soup |
| convection | heat transfer by the movement of a heated fluid |
| an example of convection | the soup in a pot heating up |
| density | measurement of how much mass there is in a volume of a substance |
| an example of density | comparing the same "amount" of rock and the same "amount" of water; the rock sinks |
| convection currents | the flow that transfers heat within a fluid |