Topic 4: Thermal Energy

The Law of Conservation of Energy states:

• Energy is always created and destroyed.

• Energy is never created or destroyed, it is only transformed.

• Energy can be created or destroyed but not transformed.

• Energy can't be created, destroyed or transformed.

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The measure of the average energy of the particles in a substance is called

• Temperature

• Heat

• Radiation

• Thermal Energy

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 The total energy (both kinetic and potential) of all the particles in an object is called

• Heat

• Thermal Energy

• Radiation

• Specific Heat

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Conduction can best be described as

• a type of heat transfer that occurs through the movement of fluids or gas.

• transfer of energy by electromagnetic waves.

• transfer of energy from one particle of matter to another that are in direct contact.

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Convection can best be described as

• a measure of the average energy of the particles in an object.

• transfer of energy from one particle of matter to another that are in direct contact.

• a type of heat transfer that occurs through the movement of fluids or gas.

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Radiation can best be described as

• a type of heat transfer that occurs through the movement of fluids or gas.

• transfer of energy by electromagnetic wave.

• transfer of energy from one particle of matter to another that are in direct contact.

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A material that does not transfer heat well is known as a(n)

• Conductor

• Insulator

• Thermal Equilibrium

• Thermal Expansion

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The heating and cooling of air flow shown in the image creates a circular motion known as

• Conduction

• Convection

• Convection current

• Radiation

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What is absolute zero?

• absolute zero is the lowest number on a Celsius thermometer

• absolute zero is the lowest number on a Fareheneit thermometer

• absolute zero is the negative numbers on the thermometer

• absolute zero represents the lowest temperature that is scientifically possible & it is on the kelvin scale

Sadie likes to attend football games, no matter how cold and snowy the weather becomes. At a cold game, she activates a hand warmer and tucks it into the glove she is wearing. She holds her hands together, and before long, her hands are warm. Which best describes how her hands were warmed?

• Heat was transformed by radiation, resulting in an increase in energy.

• Heat was transformed by convection, resulting in the conservation of energy.

• Heat was transferred by conduction, resulting in an increase in energy.

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