Chapter 7 Energy Review

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What is conduction?

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Conduction is the transfer of heat through direct contact between materials. For example, when you touch a hot stove, heat transfers from the stove to your hand.

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What is convection?

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Convection is the transfer of heat through the movement of fluids (liquids or gases). For example, warm air rising and cool air sinking creates a convection current.

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What is radiation?

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Radiation is the transfer of heat in the form of electromagnetic waves. For example, the warmth you feel from the sun is due to radiation.

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What is energy?

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Energy is the ability to do work or cause change. It exists in various forms, such as thermal, mechanical, electrical, and chemical.

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What is mechanical energy?

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Mechanical energy is the energy associated with the motion and position of an object. For example, a moving car has mechanical energy.

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What is thermal energy?

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Thermal energy is the energy that comes from the temperature of matter. The hotter the substance, the more thermal energy it has.

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What is electrical energy?

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Electrical energy is the energy of moving electrons. It powers our homes and devices.

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What is sound energy?

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Sound energy is the energy produced by vibrating sound waves. For example, music from a speaker is sound energy.

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What is the law of conservation of energy?

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The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

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What happens to chocolate in a hot car?

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Chocolate melts in a hot car due to radiation from the sun, which heats the chocolate.

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