Heat transfer-Conduction Convection Radiation

Front

What is conduction?

Back

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

Front

What is convection?

Back

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

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, meaning it can occur in a vacuum.

Front

How does a hot spoon help scoop ice cream?

Back

The warmth of the spoon is conducted to the ice cream, making it easier to scoop out.

Front

How does an iron smooth out wrinkles in clothes?

Back

The iron transfers heat to the clothes through conduction, which helps to relax the fibers and remove wrinkles.

Front

How can water in a bottle get hot on a sunny day?

Back

The water can get hot through conduction (contact with the warm bottle), convection (warm air around the bottle), and radiation (sunlight hitting the bottle).

Front

What happens when a heat pack is placed on cold feet?

Back

The warmth of the heat pack is conducted onto John's cold feet, warming them up.

Front

What causes warm air to flow out of an oven when opened?

Back

The warm air flows out due to convection, as the hot air inside the oven rises and escapes.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is touching a hot stove and feeling the heat transfer to your hand.

Front

What is an example of convection in everyday life?

Back

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