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Waves, Light, and Sound
Grade 4 - Science - Challenge Me
Worksheet 1
1Light path model: a model of sound from a speaker shows larger amplitude. What observation matches that wave model?
2Signal test: which model explains how a student sees the object making sound from a speaker?
3Pattern check: how could the signal "two buzzer taps followed by a pause" transfer information?
4Signal test: which question is about the wave pattern in water waves in a tray?
5Pattern check: which evidence would support a light-reflection model?
6Wave model: a model of sound from a guitar string shows smaller amplitude. What observation matches that wave model?
7Pattern check: which model explains how a student sees the object making sound from a speaker?
8Signal test: how could the signal "red-blue-red light flashes" transfer information?
9Pattern check: which question is about the wave pattern in water waves in a tray?
10Observation model: which evidence would support a light-reflection model?
About this worksheet
Waves, light, and sound models help students explain patterns they can observe but not always see directly asks fourth graders to connect observations with an explanation, model, or design decision instead of choosing a fact from memory. Students may confuse a wave property with a material property, or think eyes send out light instead of receiving reflected light from objects. This worksheet uses short investigations and evidence-based situations so students must read what happened, decide which science idea is being tested, and choose the answer that fits the title. Students interpret amplitude and wavelength, model how reflected light lets us see, and compare sound or light patterns used to transfer information. Support versions use familiar objects and direct wording. Standard and challenge versions add closer distractors, fair-test language, and multi-step evidence. Ask your child to point to the measurement, diagram, map, or observation before answering. If the choice does not explain the evidence in the prompt, it is probably a distractor. That habit keeps science reasoning tied to data rather than guesswork.
What your child will learn
Model wave patterns
Relate wave properties to observations
Explain how reflected light enters the eye
Use patterns to transfer information
Worked example
A drum sound with larger amplitude is louder, while seeing the drum requires light reflecting from it into the eye.
Common mistake
Saying the eye shines light onto objects instead of receiving reflected light.
Helpful hint
Match the model to the observation: wave pattern, reflected light, or information signal.
Worksheet 1