Energy: Review

Contributor: Samantha Penna. Lesson ID: 11763

If you've studied our lessons about light, heat, sound, and electricity, you should have the "energy" to review those forms of energy and complete a simple follow-up project! Power up your camera!


Physical Science

learning style
Kinesthetic, Visual
personality style
Grade Level
Primary (K-2)
Lesson Type
Dig Deeper

Lesson Plan - Get It!


What are the four types of energy you learned about?

You learned about light, heat, sound, and electrical energy.

This lesson reviews everything you learned about these different forms of energy. Did you remember energy is the ability to do work? Fantastic!

Before you take this review, if you missed any of the previous Related Lessons in the Energy series; please check them out now in the right-hand sidebar, or you won't be able to review them!


Light energy can come from natural sources or man-made sources. Natural sources of energy occur naturally on Earth or in space. Man-made sources of energy are created by people. The sun, fire, and stars are examples of light energy that comes from natural sources. Lightbulbs, televisions, and computers are examples of light energy that is man-made. Light travels in straight lines. If white light goes through a prism, a rainbow of colors will be shown on the other side. A prism is a three-dimensional glass that is usually shaped like a triangle.


Image [cropped] by Suidroot, via Wikimedia Commons, is licensed under the CC BY-SA 2.5 Generic license.

Heat is a form of energy that also can be naturally occurring or man-made. Natural heat comes from fire, friction, and the sun. Friction occurs when two things rub together quickly to create heat. Man-made heat comes from objects like a stove, a microwave, and an oven. If you touch something that is hot, it will burn your hand, because heat can be transferred from one object to another. You can use a thermometer to tell how hot something is.


Sound is a form of energy that is made by vibrations. These vibrations travel in waves to your ears. The sound travels into your ear and vibrates your ear drum. Then, your brain processes the vibrations as sound. Low-pitched sounds, like the sound that comes from a drum, create longer waves than high-pitched sounds. A whistle makes a high-pitched sound.


Electrical energy can be found right where you are now! Electricity can be made in a power plant. The power plant sends the electricity through power lines, and these power lines bring power to your learning space. Lights, computers, and televisions are examples of things that are powered by electricity. Natural electricity is found in lightning bolts.


Did you remember all the different types of energy you learned about? Tell your parent or teacher the names of all the forms of energy you learned about.

Great work! In the Got It? section, you will answer questions about the different types of energy you have studied.

Elephango's Philosophy

We help prepare learners for a future that cannot yet be defined. They must be ready for change, willing to learn and able to think critically. Elephango is designed to create lifelong learners who are ready for that rapidly changing future.