This 250-word reading passage introduces fourth-grade students to the concept of sound production through collisions, aligned with NGSS standard 4-PS3-3 and Disciplinary Core Ideas PS3.A and PS3.B. Students explore how everyday collisions—such as clapping hands, dropping books, or hitting drums—transfer energy and create sound. The passage uses simple, grade-appropriate language to explain that when objects collide, they vibrate and produce sound waves that travel through the air to our ears. Real-world examples help students connect collision energy to sound energy in familiar contexts like musical instruments, doorbells, and classroom activities. The passage includes bolded vocabulary terms with immediate definitions, making complex scientific concepts accessible to fourth graders. Audio integration supports diverse learners by providing multiple ways to access the content. Accompanying activities include multiple-choice comprehension questions, writing prompts that encourage application of concepts, and graphic organizers that help students analyze cause-and-effect relationships in sound production. This resource builds foundational understanding of energy transfer and transformation, preparing students for hands-on investigations and deeper exploration of physical science concepts throughout the school year.
Written by Workybooks TeamPublished by Workybooks
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When you bang on a drum, the collision between your hand and the drum transfers energy that makes the drum and air vibrate. Image credit Icsilviu / Pixabay.
When two objects hit each other, they make a collision. A collision happens when objects bump or crash together. Many collisions produce sound, which is a form of energy that we can hear.
Think about clapping your hands. When your hands hit each other, they collide. This collision makes your hands vibrate, which means they move back and forth very quickly. These vibrations create sound waves that travel through the air to your ears. Sound waves are invisible movements in the air that carry sound energy.
Many everyday actions create sound through collisions. When you drop a book on a table, the book collides with the table and makes a thud. When you knock on a door, your knuckles collide with the wood and create a knocking sound. When a drummer hits a drum, the drumstick collides with the drum surface, making it vibrate and produce sound.
The amount of sound depends on the collision. A gentle tap makes a quiet sound because less energy transfers during the collision. A hard hit makes a loud sound because more energy transfers. Musicians use this idea when they play instruments. They control how hard they strike, pluck, or hit their instruments to make different volumes of sound.
Understanding that collisions produce sound helps explain many sounds we hear every day, from footsteps on the floor to raindrops hitting a window.
What is a collision?
When objects hit each otherWhen objects float in airWhen objects melt togetherWhen objects become invisible
What does vibrate mean?
To stay completely stillTo move back and forth quicklyTo grow larger slowlyTo change colors rapidly
What carries sound energy to your ears?
Light beamsWater dropletsSound wavesWind currents
Why does a hard hit make louder sound?
It uses less energyIt transfers more energyIt stops all vibrationsIt removes all sound waves
How do musicians control sound volume?
By changing instrument colorBy adding more stringsBy controlling collision forceBy making instruments bigger
Which creates sound through a collision?
Dropping a book on tableLooking at a pictureThinking about musicSmelling fresh flowers