This engaging 250-word reading passage introduces fourth-grade students to the fundamental concept of how waves move objects, aligned with NGSS standard 4-PS4-1 and Disciplinary Core Idea PS4.A. Students discover that waves transfer energy to objects, causing them to move up and down, but the objects do not travel with the wave itself. Through relatable examples like floating balls on water and leaves on pond surfaces, students build foundational understanding of wave energy and motion. The passage uses age-appropriate language and concrete analogies to explain abstract concepts. Audio integration supports diverse learners by providing text-to-speech functionality, enhancing accessibility and comprehension. The resource includes a simplified differentiated version for struggling readers, Spanish translations of both versions, a comprehensive glossary of key terms, multiple-choice questions testing recall and application, writing activities requiring explanation and connection-making, and graphic organizers for cause-and-effect and observation-inference analysis. This complete educational package helps teachers meet NGSS standards while providing scaffolded support for all learners, making complex physical science concepts accessible and engaging for elementary students.
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When a wave passes through water, it makes objects on the surface move up and down.. Image credit Trygve Finkelsen / Pexels.
Waves are repeating movements that carry energy from one place to another. When waves move through water or air, they can push and pull on objects in their path. Understanding how waves affect objects helps us explain many things we see in nature.
When a wave passes through water, it makes objects on the surface move up and down. Imagine placing a small ball on a calm pond. When you create waves by moving your hand in the water, the ball bobs up and down. The ball rises when the high part of the wave, called the crest, reaches it. Then the ball drops down when the low part of the wave, called the trough, passes underneath. This up-and-down motion happens because the wave transfers its energy to the ball.
Here is something important to remember: the ball does not travel across the pond with the wave. The wave energy moves forward through the water, but the ball only moves up and down in the same spot. Think of it like a jump rope turning in circles. The rope moves in a wave pattern, but each part of the rope stays in roughly the same place as it goes up and down.
You can observe this same pattern with leaves floating on a pond or toys bobbing in a bathtub. The waves pass by, the objects move up and down, but the objects stay in approximately the same location. The wave carries energy, not the object itself.
What do waves carry from place to place?
EnergyObjectsWater onlyAir only
What is the high part of a wave called?
ValleyCrestTroughPeak point
What is the low part of a wave called?
BottomDipTroughLow crest
Why does a ball bob up and down?
Wind pushes it aroundWave energy moves itWater carries it forwardGravity pulls it down
What happens to a floating ball location?
Travels across the waterSinks to the bottomStays in same spotFlies into the air
How is wave motion like a jump rope?
Both carry objects forwardParts move up and down in placeBoth need two peopleBoth are made of rope
Waves carry objects across the water with them.
TrueFalse
What does energy mean in this passage?
How tired you feelPower to cause motion or changeSpeed of waterTemperature of water