Heat Flow 11.1

Front

What is heat flow?

Back

Heat flow is the transfer of thermal energy from one object to another due to a difference in temperature.

Front

What happens when hot water is mixed with cold water?

Back

Heat flows from the hot water to the cold water, warming the cold water.

Front

What is conduction?

Back

Conduction is the process of heat transfer through solids, where heat moves from the hotter object to the cooler object.

Front

What is convection?

Back

Convection is the transfer of heat through fluids (liquids and gases) where warmer areas of a liquid or gas rise and cooler areas sink.

Front

What is radiation?

Back

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

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact no longer transfer heat to each other because they are at the same temperature.

Front

How does heat travel between two objects?

Back

Heat travels from the hotter object to the cooler object until both reach the same temperature.

Front

What is an example of heat transfer in everyday life?

Back

An example is when you touch a hot stove and heat transfers from the stove to your hand.

Front

What is the role of temperature in heat flow?

Back

Temperature determines the direction of heat flow; heat always moves from higher to lower temperature.

Front

What happens to the temperature of a substance when it absorbs heat?

Back

The temperature of the substance increases when it absorbs heat.