Heat Transfer Study Review

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when two objects at different temperatures touch each other, allowing heat to flow from the hotter object to the cooler one.

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What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer areas of a liquid or gas rise and cooler areas sink, creating a circulation pattern.

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What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, allowing heat to be transferred through empty space.

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What are electromagnetic waves?

Back

Electromagnetic waves are waves that can transfer energy, including heat, through a vacuum. Examples include visible light, infrared radiation, and microwaves.

Front

What is temperature?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance. It indicates how hot or cold a substance is.

Front

How does heat transfer occur when holding a hot object?

Back

When you hold a hot object, heat is transferred from the object to your hand through conduction, warming your skin.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is when you touch a metal spoon that has been sitting in a hot pot of soup; the heat from the soup transfers to the spoon and then to your hand.

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What is an example of convection?

Back

An example of convection is boiling water; as the water at the bottom heats up, it rises to the top, while cooler water descends, creating a circular motion.

Front

What is an example of radiation?

Back

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

Front

What happens to particles in a substance when it is heated?

Back

When a substance is heated, its particles gain kinetic energy, move faster, and usually spread apart, causing the substance to expand.