Conduction

• This happens when heat moves from one object to another through direct touch.
• For instance, when you cook on the stove, your pan gets hot because it touches the burner.
• In homes, about 90% of heat loss is due to conduction through the walls.

Convection

• This is when heat is passed through the movement of fluids, like liquids or gases.
• An example would be warm air rising in a room or hot water moving around in a pot.
• In a normal home, convection can create temperature differences of up to 10°C.

Radiation

• This is how heat travels in waves and doesn’t need anything to move through.
• For example, you can feel warmth from the sun, which is called solar radiation. The surface of the sun can reach temperatures of around 6000°C.
• About half of the heat that warms the Earth comes from radiation.