Bacola Energy 22/23

Front

What is convection?

Back

Convection is a form of heat transfer that causes circular movement in fluids (liquids and gases) due to the movement of warmer, less dense areas rising and cooler, denser areas sinking.

Front

What is conduction?

Back

Conduction is a type of heat transfer that requires direct contact between objects. Heat moves from the hotter object to the cooler one through molecular collisions.

Front

What is radiation?

Back

Radiation is a form of heat transfer that occurs through electromagnetic waves. It does not require any medium (like air or water) to transfer heat.

Front

What are the three main types of heat transfer?

Back

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

Front

How does heat transfer occur when sitting in front of a campfire?

Back

When sitting in front of a campfire, you feel heat through radiation (from the fire) and convection (from the warm air rising).

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 from the stove to your hand.

Front

What is an example of convection in everyday life?

Back

An example of convection is when boiling water; the hot water rises to the top while cooler water sinks.

Front

What is an example of radiation in everyday life?

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 happens to the density of a fluid when it is heated?

Back

When a fluid is heated, it becomes less dense and rises, while cooler, denser fluid sinks.

Front

What is the role of density in convection currents?

Back

Density differences in fluids drive convection currents; warmer, less dense fluid rises, while cooler, denser fluid sinks.