Heat Transfer for Physics Class

Front

What is Forced Convection?

Back

Forced Convection is the process of heat transfer in a fluid (liquid or gas) where the fluid is forced to flow over a surface by an external force, such as a fan or pump.

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What is Natural Convection?

Back

Natural Convection is the process of heat transfer in a fluid where the fluid motion is caused by buoyancy forces that result from density differences due to temperature variations.

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What is Conduction?

Back

Conduction is the transfer of heat through a material without any movement of the material itself, occurring when two objects at different temperatures are in direct contact.

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What is Radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, which can occur in a vacuum.

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What is Insulation?

Back

Insulation is a material or method used to reduce the rate of heat transfer between objects, helping to maintain temperature.

Front

Example of Forced Convection in daily life?

Back

Using a ceiling fan to circulate air in a room, making you feel cooler.

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Example of Natural Convection in daily life?

Back

Hot air rising from a heater, causing cooler air to move in to take its place.

Front

How does a heat sink work?

Back

A heat sink absorbs heat from a hot component (like a circuit board) through conduction and then dissipates it into the surrounding air.

Front

What happens to air when it is heated?

Back

When air is heated, it becomes less dense and rises, creating a convection current.

Front

What is the role of a fan in heat transfer?

Back

A fan enhances heat transfer by forcing air movement, increasing the rate of heat exchange through forced convection.