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 are the three main methods of heat transfer?

Back

The three main methods of heat transfer are conduction, convection, and radiation.

Front

Define conduction.

Back

Conduction is the transfer of heat through a solid material without the movement of the material itself, typically occurring in solids.

Front

Define convection.

Back

Convection is the transfer of heat through fluids (liquids and gases) caused by the movement of the fluid itself, where warmer areas rise and cooler areas sink.

Front

Define radiation.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, and does not require a medium to travel through.

Front

In which method of heat transfer does heat flow from a hotter object to a colder object?

Back

Heat always flows from a hotter object to a colder object.

Front

What happens to the temperature of water near the surface of a swimming pool?

Back

The water near the surface of a swimming pool is slightly warmer due to convection.

Front

How does stirring hot coffee with a spoon demonstrate conduction?

Back

When a spoon is stirred in hot coffee, heat is transferred from the hot coffee to the spoon, making the spoon hot due to conduction.

Front

What is an example of convection in nature?

Back

An example of convection in nature is the movement of magma in the Earth's mantle, where hot magma rises and cold magma sinks.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter; it is the total kinetic energy of particles in a substance.