Unit 4 Test Review

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What is energy?

Back

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

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What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. It depends on the mass of the object and its velocity.

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What is potential energy?

Back

Potential energy is stored energy based on an object's position or state. For example, a ball held at a height has gravitational potential energy.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of particles in an object.

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What is electrical energy?

Back

Electrical energy is the energy caused by the movement of electrons. It powers devices like cell phones and ceiling fans.

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What is mechanical energy?

Back

Mechanical energy is the sum of kinetic and potential energy in an object. It is the energy associated with the motion and position of an object.

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What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). Warmer, less dense fluid rises while cooler, denser fluid sinks.

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What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. For example, a metal spoon getting hot in a pot of boiling water.

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What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves. An example is the heat from the sun warming the Earth.

Front

How does potential energy convert to kinetic energy?

Back

Potential energy converts to kinetic energy when an object starts moving, such as a roller coaster descending from a height.