The Domino Chain Reaction
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About this printable The Domino Chain Reaction science reading passage, NGSS-aligned (Grades 3-6)
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The Domino Chain Reaction

What Is a Domino Chain Reaction?
A chain reaction happens when one event starts a series of other events. In a domino chain reaction, a row of standing dominoes is set up close together. When you push the first domino, it falls and knocks into the next one. This keeps happening, and the energy moves down the line until every domino has fallen.
How Does Energy Move?
Before you touch the dominoes, each one has potential energy. This is stored energy because the domino is standing up and could fall. When you push the first domino, that potential energy turns into kinetic energy, which is energy of movement. As each domino falls, it hits the next one, passing on its energy. This is called energy transfer. Some energy also turns into sound and a tiny bit of heat.
Why Are Chain Reactions Special?
A domino chain reaction is special because a tiny push can make a huge change. It’s like the world’s longest game of tag—each domino "tags" the next one with energy until all have fallen! One small action can have a big result.
Design Challenges
Setting up dominoes isn’t always easy. If dominoes are too far apart, the chain reaction stops. If the surface is slippery, dominoes may slide instead of standing up. You can also make patterns, curves, or even tricks. Changing the spacing or adding obstacles can make the reaction more exciting or harder to complete.
Real-World Chain Reactions
Domino chain reactions help us understand other chain reactions, too. For example, a forest fire can start with one spark and quickly spread. Nuclear power plants use chain reactions to create energy. Even viral videos online spread from one person to many, like dominoes falling. That’s why we are careful with things like fire—one small action can cause a big reaction.
Hands-On Activity
Try making your own domino chain reaction. Experiment with different patterns, spacings, and obstacles. See how changing one thing can affect the whole reaction!
Interesting Fact: The world record for most dominoes toppled in a chain reaction is over 4 million!
Comprehension quiz (8 questions)
1. What is a chain reaction?
2. What energy do standing dominoes have?
3. What happens if dominoes are too far apart?
4. What is energy transfer?
5. Why are chain reactions important?
6. How are domino chains like viral videos?
7. Domino chain reactions always make a lot of heat.
8. What is a trigger in a chain reaction?
Perfect for the way you teach
- Build comprehension skills
- Auto-graded quiz
- Differentiated reading
- Read together at home
- Improve fluency
- Quiet reading time
- Reading curriculum support
- Independent practice
- Track Lexile growth


