Convection, Conduction, Radiation

Front

What is radiation in the context of heat transfer?

Back

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

Front

How does radiation affect temperature in enclosed spaces?

Back

Radiation can cause the temperature in enclosed spaces, like a car on a sunny day, to rise significantly due to the absorption of heat from sunlight.

Front

What is an example of heat transfer by radiation?

Back

An example of heat transfer by radiation is the way heat from the sun warms the Earth.

Front

What is convection and how does it work?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

What is an example of convection in nature?

Back

An example of convection is warm air rising over a beach while cooler air from the ocean moves in to replace it.

Front

What is conduction in the context of heat transfer?

Back

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

Front

How does conduction work with solid materials?

Back

In solids, conduction occurs as vibrating particles transfer kinetic energy to neighboring particles.

Front

What happens to an egg placed on hot pavement?

Back

The pavement conducts heat to the egg, cooking it due to the high temperature of the pavement.

Front

What is the primary source of energy for the Earth's surface?

Back

The primary source of energy for the Earth's surface is radiation from the sun.

Front

What is the difference between conduction and convection?

Back

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