Ellie’s house has central heating. The rooms in the house are heated by radiators.Ellie’s Mom says, ‘It is too warm.’ She turns down the central heating.What does Ellie’s Mom use to turn down the central heating?

Heat is a type of energy. It is not nice to be too cold. It is nice to be warm. But being too hot can be a bad thing. At school you will have learned that we measure how hot or cold it is by taking the temperature. We use thermometers to measure the temperature.