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 types of heat transfer?

Back

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

Front

Define conduction.

Back

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

Front

Define convection.

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases), where warmer areas of a liquid or gas rise and cooler areas sink.

Front

Define radiation.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum, such as heat from the sun.

Front

What happens to the heat when you hold an ice cube in your hand?

Back

The heat from your hand flows into the ice cube, causing it to melt.

Front

How does a lava lamp demonstrate convection?

Back

In a lava lamp, the colored liquid forms globs that rise and fall due to differences in temperature and density, illustrating convection.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is when you touch a hot stove and feel the heat transfer to your hand.

Front

What is an example of convection in cooking?

Back

An example of convection in cooking is boiling water, where hot water rises to the top and cooler water sinks.

Front

What is an example of 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.