Heat transfer

Front

What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

Front

What is conduction?

Back

Conduction is the process of heat transfer through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases), where warm fluid rises and cool fluid sinks.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as sunlight warming the Earth.

Front

What is an insulator?

Back

An insulator is a material that resists the flow of heat, preventing heat transfer.

Front

What is a conductor?

Back

A conductor is a material that allows heat to flow easily, facilitating heat transfer.

Front

How does the Sun warm the Earth?

Back

The Sun warms the Earth primarily through radiation, as it emits energy in the form of electromagnetic waves.

Front

What happens when you touch a hot object?

Back

When you touch a hot object, heat is transferred to your skin through conduction, which can cause burns.

Front

What is an example of convection in everyday life?

Back

An example of convection is the way warm air rises and cool air sinks in a room, creating air currents.

Front

What is the role of thermal energy in heat transfer?

Back

Thermal energy is the energy that comes from the temperature of matter; it drives the process of heat transfer.