PS 3/4 Grid 2D Flashcard

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.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is radiation?

Back

Radiation is the transfer of energy by electromagnetic waves, such as light or heat, without the need for a medium.

Front

What is conduction?

Back

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

Front

What is an example of convection in nature?

Back

An example of convection is the warm air rising and cool air sinking in the atmosphere, creating wind patterns.

Front

How does thermal energy transfer in a vacuum?

Back

In a vacuum, thermal energy can only be transferred through radiation, as there are no particles to conduct or convect heat.

Front

What happens to thermal energy in a closed system?

Back

In a closed system, thermal energy is conserved; it can change forms but the total amount remains constant.

Front

What is an example of conduction?

Back

An example of conduction is a metal spoon getting hot when placed in a pot of boiling water.

Front

What is the difference between conduction and convection?

Back

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

Front

What is an example of radiation?

Back

An example of radiation is feeling the warmth of the sun on your skin, even though you are not in direct contact with it.