MGH Chapter 4 Energy and Circuits Test Review

Front

What is energy?

Back

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

Front

What is mechanical energy?

Back

Mechanical energy is the energy associated with the motion and position of an object. It can be kinetic (energy of motion) or potential (stored 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.

Front

What is electrical energy?

Back

Electrical energy is the energy caused by the movement of electrons. It powers devices like lamps, toasters, and computers.

Front

What is sound energy?

Back

Sound energy is the energy produced by vibrating sound waves. It is created when an object vibrates, causing air particles to move.

Front

How does a toaster work?

Back

A toaster transforms electrical energy into thermal energy to toast bread by using heating elements that get hot when electricity passes through them.

Front

What is an example of energy transformation?

Back

An example of energy transformation is a lamp that converts electrical energy into light energy and thermal energy.

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What is an example of kinetic energy?

Back

A person riding a bicycle is an example of kinetic energy because they are in motion.

Front

What is an example of potential energy?

Back

A book on a shelf has potential energy because it has the potential to fall due to gravity.

Front

What is the source of sound energy in a flute?

Back

The source of sound energy in a flute is the air blown over the hole of the flute, causing it to vibrate.