Unit 4 Review

Front

What is radiation?

Back

Radiation is the transfer of heat through electromagnetic waves, such as sunlight warming your skin.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between objects that are touching.

Front

What happens to particles when they are heated?

Back

Particles speed up as they gain energy when heated.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) where warmer, less dense areas rise and cooler, denser areas sink.

Front

Give an example of conduction.

Back

Walking on warm sand with bare feet is an example of conduction.

Front

What is an example of convection?

Back

Movements of water in a pot or hot air rising in the atmosphere are examples of convection.

Front

What is the difference between conduction and convection?

Back

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

Front

What is thermal energy?

Back

Thermal energy is the total energy of all the particles in an object, related to temperature.

Front

How does heat transfer affect the density of fluids?

Back

As fluids are heated, they expand, become less dense, and rise; when cooled, they become denser and sink.

Front

What is an example of radiation in everyday life?

Back

The warmth felt from sunlight or a campfire is an example of radiation.