If you’re getting ready to teach waves to your students, you’ll need something to help them sort out all the confusing terms. That’s what this graphic organizer was designed to do. It’s a SIMPLE introduction to waves; something you can use to make sure that, before going any further, students have been properly introduced to wave basics (why go any further if they don’t know the fundamentals?), and how the key terms (mechanical wave, electromagnetic waves, longitudinal wave, transverse wave, radio wave, microwave, infrared radiation, visible light, ultraviolet light, x-rays, gamma rays) are related.
How this lesson works- Students have a blank handout which they fill in as you present the PowerPoint, click-by-click. At the top-center is the term “Waves” and it’s definition (transfer of energy through space and matter). “Waves” then splits into “Mechanical Waves” and “Electromagnetic Waves”, with a short definition of each. “Mechanical Waves” then splits into “Transverse” and “Longitudinal”, with a drawing, definition, and 2 examples of each. On the other side, “Electromagnetic Waves” drops into “Transverse”, where students will draw a transverse wave, then list the 7 kinds of electromagnetic energy (radio wave, microwave, infrared radiation, visible light, ultraviolet light, x-rays, gamma rays), 1 use for each, and how harmful each kind of electromagnetic energy is to humans.
Two different PowerPoints are included in this lesson for you to choose from- one has everything on already on it, and students just copy it all as notes onto their handout. The other PowerPoint has some blanks where it lists the examples of mechanical waves, and for the uses and harmfulness of the types of electromagnetic energy (radio waves, microwaves, infrared radiation, visible light, ultraviolet light, x-rays, gamma rays); students research these and fill them in for homework.
Since this is a PowerPoint, you can certainly add to and change any text you like, so that your students are benefitted the most.
Key words: mechanical wave, electromagnetic wave, longitudinal wave, transverse wave, radio wave, microwave, infrared radiation, visible light, ultraviolet light, x-rays, gamma rays