Heat Energy & Heat Transfer: Beat the Teacher

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). Warm fluid rises while cooler fluid sinks, creating a circulation pattern.

Front

What is conduction?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium (like air or water) to travel.

Front

How does convection occur in a swimming pool?

Back

In a swimming pool, warm water at the surface rises while cooler water sinks, creating a circulation of water that distributes heat.

Front

What happens to air near the ceiling of a room?

Back

The air near the ceiling is warmer because it rises due to convection, as warm air is less dense than cool air.

Front

What is an example of heat transfer by conduction?

Back

An example of conduction is when a metal spoon gets hot after being placed in a pot of hot soup.

Front

What is an example of heat transfer by radiation?

Back

An example of radiation is feeling the warmth of the sun on your skin, even when you are not in direct contact with it.

Front

What causes the globs in a decorative lamp to rise?

Back

The globs in a decorative lamp rise due to convection, as the heated liquid becomes less dense and rises to the top.

Front

What is the main difference between convection and conduction?

Back

The main difference is that convection involves the movement of fluids, while conduction occurs through direct contact between solids.

Front

Why does a boulder get hot in the sun?

Back

A boulder gets hot in the sun due to radiation, as it absorbs heat from the sun's rays.