3rd Grade Heat Unit Flashcard

Front

What is radiation?

Back

Radiation is a form of heat transfer that occurs through electromagnetic waves. It does not require a medium, so it can happen in a vacuum, like the heat from the sun reaching the Earth.

Front

What is convection?

Back

Convection is the transfer of heat through a fluid (liquid or gas) caused by the movement of the fluid itself. Hot fluid rises, and cold fluid sinks, creating a circulation pattern.

Front

What is conduction?

Back

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

Front

What is a conductor?

Back

A conductor is a material that allows heat to pass through it easily. Metals are good conductors of heat.

Front

What is an insulator?

Back

An insulator is a material that does not allow heat to pass through it easily. Examples include rubber, cloth, and wood.

Front

What is friction?

Back

Friction is the resistance that one surface or object encounters when moving over another. It generates heat when two surfaces rub against each other.

Front

How do we get heat from burning?

Back

Burning is a chemical reaction that releases energy in the form of heat. For example, when wood burns, it produces heat and light.

Front

What happens to ice cream on a hot day?

Back

Ice cream melts quickly on a hot day due to heat transfer from the warm air (radiation) and the surface it is sitting on.

Front

What is an example of a good conductor of heat?

Back

Metal is an example of a good conductor of heat. It allows heat to move through it quickly.

Front

What is an example of an insulator?

Back

Rubber is an example of an insulator. It does not allow heat to pass through it easily.