Heat Transfer Practice

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer areas of a liquid or gas rise and cooler areas sink, creating a circulation pattern.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat is transferred from one molecule to another without the movement of the material as a whole.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, allowing heat to be transferred through a vacuum.

Front

What is the inner core of the Earth?

Back

The inner core is the solid, innermost layer of the Earth, with temperatures reaching about 5,505 degrees Celsius. It is primarily composed of iron and nickel.

Front

How does heat transfer occur in boiling water?

Back

In boiling water, heat transfer occurs through convection, where the warmer water at the bottom rises to the top, while cooler water descends.

Front

What is an example of radiation in everyday life?

Back

An example of radiation is the heat felt from the sun or from a heat lamp, which warms objects without direct contact.

Front

What is the role of insulation in heat transfer?

Back

Insulation reduces heat transfer by providing a barrier that slows down the movement of heat through conduction, convection, or radiation.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, creating convection currents that can distribute heat throughout a room.

Front

What is the difference between conduction and convection?

Back

Conduction is heat transfer through direct contact, while convection involves the movement of fluids (liquids or gases) to transfer heat.

Front

What is an example of conduction?

Back

An example of conduction is touching a hot stove; heat transfers from the stove to your hand through direct contact.