Geothermal
Candle
Thermometer
Melting
Expansion
Temperature
Heat
Evaporation
Sun
Radiator
When matter is heated it gets bigger
Natural heat source from inside the earth
Measures how hot or cold an object is
Object that measures temperature
Artificial heat source that transforms chemical or electrical energy into heat
Our main natural heat source
When a solid is heated it becomes liquid
Artificial heat and light source made up with bee wax
It happens when a liquid is heated
It is thermal energy