Conduction, Convection, Radiation

Front

What is conduction?

Back

Conduction is the transfer of heat through a material without the movement of the material itself, typically occurring in solids where heat is transferred through direct contact between particles.

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, resulting in the circulation of the fluid.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum and does not require a medium to travel.

Front

How does heat transfer occur when you touch a hot object?

Back

Heat transfer occurs through conduction when you touch a hot object, as heat moves from the object to your skin.

Front

What is an example of convection in everyday life?

Back

An example of convection is the heating of water in a pot on a stove, where hot water rises and cooler water sinks, creating a circulation pattern.

Front

How does the sun warm the Earth?

Back

The sun warms the Earth primarily through radiation, as solar energy travels through the vacuum of space and heats the Earth's surface.

Front

What type of heat transfer is involved in using a microwave oven?

Back

Microwave ovens primarily use radiation to transfer heat to food, as microwaves excite water molecules in the food, generating heat.

Front

What happens to your skin when you get sunburned?

Back

You get sunburned due to radiation from the sun, which damages skin cells through exposure to ultraviolet (UV) rays.

Front

What is the role of heat lamps in keeping baby chickens warm?

Back

Heat lamps provide warmth to baby chickens through radiation, emitting infrared radiation that heats the chicks directly.

Front

What is the difference between conduction and convection?

Back

Conduction involves heat transfer through direct contact in solids, while convection involves heat transfer through the movement of fluids.