This engaging reading passage introduces fourth-grade students to the concept of straight wave patterns as outlined in NGSS standard 4-PS4-1. Students learn that waves can travel in different patterns depending on how they are created. The passage uses accessible examples like ocean waves approaching a beach and compares straight wave patterns to circular patterns created by dropping a pebble in water. Through clear explanations and relatable analogies, students build foundational understanding of wave behavior and wave patterns. The passage is audio-integrated to support diverse learners and includes a simplified differentiated version for students reading below grade level. Accompanying activities include comprehension questions, writing prompts, and graphic organizers that reinforce understanding of how wave patterns form and differ based on their source. This resource aligns with NGSS Disciplinary Core Idea PS4.A: Wave Properties and prepares students for hands-on investigations of wave phenomena.
Written by Workybooks TeamPublished by Workybooks
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A wave is a disturbance that moves energy from one place to another. Waves travel in different patterns depending on how they are created. Understanding wave patterns helps scientists predict how waves will move and where their energy will go.
Some waves travel in straight lines. A straight line is the shortest path between two points. When you watch ocean waves coming toward a beach, you can see them moving in long, straight rows. These waves form far out in the ocean when wind blows across the water surface. The wind creates waves that travel in the same direction, forming straight, parallel lines called wave fronts. Wave fronts are the leading edges of waves moving together.
Other waves travel in circular patterns. When you drop a pebble into a calm pond, you see ripples spreading outward in circles. The circles get bigger and bigger as the wave moves away from where the pebble landed. This happens because the energy spreads out equally in all directions from one point.
The shape of a wave pattern depends on its source. A large, moving source like wind blowing across the ocean creates straight wave patterns. A single point source, like a pebble hitting water, creates circular patterns. Both patterns carry energy, but they spread that energy differently across the water.
What does a wave move?
Energy from place to placeWater onlySand and rocksWind across the ocean
What creates straight ocean wave patterns?
A pebble dropping in waterWind blowing across the oceanFish swimming in circlesBoats moving through water
What are wave fronts?
The back of wavesWaves that stop movingLeading edges of waves togetherCircles in the water
Why do pebbles create circular patterns?
Energy spreads equally all directionsPebbles are always roundWater only moves in circlesWind pushes water in circles
What determines a wave's pattern shape?
The color of the waterHow deep the water isThe source that creates itThe temperature outside
Ocean waves approaching beach move straight.
TrueFalse
Which creates a single point source?
Wind blowing across oceanA pebble hitting waterWaves at the beachLarge storm systems
What is a straight line?
The longest path between pointsA curved pathShortest path between two pointsA circular path