Waves
4th Grade Science · 8 lessons
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Lessons
- 1The Scientific MethodThe scientific method is a systematic approach to investigating questions. It involves making observations, forming hypotheses, conducting experiments, analyzing data, and drawing conclusions.Lesson
- 2Writing a HypothesisA hypothesis is a testable prediction about what will happen in an experiment. A good hypothesis is specific and based on prior knowledge or observations.Lesson
- 3Analyzing DataData analysis involves organizing, displaying, and interpreting information to find patterns. Scientists use tables, graphs, and statistics to make sense of experimental results.Lesson
- 4How Sound TravelsSound is a vibration that travels through matter as a wave. It cannot travel through a vacuum. Sound travels fastest through solids and slowest through gases.Lesson
- 5Recording Results in a TableA results table has one column for what you changed and one for what you measured, each headed with its unit. Filling it in as you go rather than afterwards is what stops the numbers getting muddled.Experiment
- 6How Sound Reaches Your EarA vibrating object pushes the air next to it, that air pushes the next layer, and the squeeze travels outward until it reaches your eardrum and makes it vibrate too. Nothing travels the whole way; only the disturbance does.Experiment
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