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

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, without the need for a medium.

Front

How does a hot air balloon float?

Back

A hot air balloon floats because the heated air inside the balloon expands, making it lighter than the cooler air outside.

Front

What happens to water when it is heated on a stove?

Back

When water is heated, the warm water rises to the top, and cooler water moves down to replace it, causing convection.

Front

What is the direction of heat flow?

Back

Heat flows from a warmer object to a cooler object.

Front

What causes the temperature difference in a swimming pool?

Back

The temperature difference in a swimming pool is caused by convection, where warmer water rises and cooler water sinks.

Front

How does ice melt in a person's hand?

Back

Ice melts in a person's hand because heat from the hand transfers to the ice by conduction.