Factors Affecting Thermal Energy Transfer

What makes objects feel warm when you touch them?

• Transfer of thermal energy from the object to your hand

• Transfer of electrical energy

• Transfer of thermal energy from your hand to the object

• Transfer of light energy

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What causes objects to feel cold when you touch them?

• Transfer of light energy

• Transfer of thermal energy from the object to your hand

• Transfer of electrical energy

• Transfer of thermal energy from your hand to the object

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In which direction does heat energy travel between objects of different temperatures?

• It travels randomly

• It does not travel between objects

• From higher temperature to lower temperature

• From lower temperature to higher temperature

What effect does a larger temperature difference have on the transfer of heat energy?

• It speeds up the transfer of heat energy

• It has no effect on the transfer of heat energy

• It slows down the transfer of heat energy

• It stops the transfer of heat energy

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What does an insulator do in relation to energy transfer?

• Speeds up energy transfer

• Slows down energy transfer

• Prevents energy transfer

• Has no effect on energy transfer

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What does a conductor do in relation to energy transfer?

• Allows energy transfer

• Has no effect on energy transfer

• Prevents energy transfer

• Speeds up energy transfer

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When does conduction of thermal energy occur?

• When particles are in a vacuum

• When particles are stationary

• When particles are able to pass on a vibration

• When particles are not in contact

Why is air a good insulator?

• Because it allows thermal energy to pass through quickly

• Because its particles are close together

• Because it is a good conductor of thermal energy

• Because its particles are spread apart

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What is the role of gas particles in the insulation properties of air?

• They prevent the transfer of thermal energy

• They slow down the transfer of thermal energy

• They speed up the transfer of thermal energy

• They have no effect on the transfer of thermal energy

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What is the main factor that determines the speed of energy transfer through a conductor?

• The weight of the conductor

• The shape of the conductor

• The material of the conductor

• The color of the conductor

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