Key ideas: heat energy flows from where it's hot to where it's not (ie heat energy will flow out of any body or place that is warmer than its surroundings, but this heat loss can be slowed down). heat is a form of energy and radiates from the sun as waves of electromagnetic energy, travelling in all directions away from its source. all animals need energy to survive and keep warm insulators can slow down the rate at which heat energy flows in order to get heat energy, we need to convert other types of energy Specific vocabulary for this science topic - suggestions for wall displays heat energy source thermometer temperature radiation conduction convection absorb reflect solid liquid gas metal insulator rise sink expand contract swell shrink