Conduction, Convection & Radiation

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one.

Front

What is convection?

Back

Convection is the transfer of thermal energy in fluids (liquids and gases) where warmer, less dense areas rise and cooler, denser areas sink.

Front

What is radiation?

Back

Radiation is the transfer of thermal energy through electromagnetic waves, which can occur in a vacuum, such as sunlight reaching Earth.

Front

What is the Law of Conservation of Energy?

Back

The Law of Conservation of Energy states that energy can neither be created nor destroyed; it can only change forms.

Front

What is an example of conduction?

Back

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

Front

What is an example of convection?

Back

An example of convection is the way warm air rises and cool air sinks in a room, creating a circulation of air.

Front

What is an example of radiation?

Back

An example of radiation is feeling the warmth of the sun on your skin, even though the air around you may be cool.

Front

How does conduction occur in solids?

Back

In solids, conduction occurs as particles vibrate and collide with neighboring particles, transferring energy.

Front

How does convection occur in liquids?

Back

In liquids, convection occurs as warmer liquid rises due to being less dense, while cooler liquid sinks, creating a current.

Front

What role does temperature play in conduction?

Back

Temperature affects conduction; the greater the temperature difference between two objects, the faster the heat transfer.