Unit 4 Week 3: Thermal Energy Transfer

Front

What is thermal energy transfer?

Back

The process of energy moving from a warmer object to a cooler object, typically in the form of heat.

Front

What happens when a warmer stream flows into a cooler lake?

Back

The stream water transfers heat to the lake water.

Front

How does heat transfer occur between two substances at different temperatures?

Back

Heat flows from the warmer substance to the cooler one until they reach the same temperature.

Front

What is the direction of heat flow in a kettle on a stove?

Back

Heat flows from the steam to the spoon.

Front

What indicates that heat has been removed from a system?

Back

A decrease in temperature, such as from 12°C to 11°C.

Front

If an object is at 42 °C, to which object will it transfer heat?

Back

It will transfer heat to an object at a lower temperature, such as Object B at 40°C.

Front

What is conduction?

Back

The transfer of heat through direct contact between materials.

Front

What is convection?

Back

The transfer of heat through the movement of fluids (liquids or gases) due to differences in temperature.

Front

What is radiation?

Back

The transfer of heat in the form of electromagnetic waves, such as sunlight.

Front

What is thermal equilibrium?

Back

The state in which two objects in contact reach the same temperature and no heat flows between them.