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2.2 Electromagnetic waves
Physics · Grade 11 · 10 lessons in the design
What you will be able to do
- explain production and detection of electromagnetic waves
- arrange electromagnetic spectrum in order of increasing frequencies
- describe the properties of electromagnetic waves
- describe the hazards of electromagnetic waves
- describe the applications of electromagnetic waves in real life situation
- appreciate the applications of electromagnetic waves in day-to-day life
Key questions
“How is electromagnetic wave important in day-to-day life?”
Lessons
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What electromagnetic waves are
40 min · 1 practice tasks · quizDescribe electromagnetic waves and explain how they are produced and detected.
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The electromagnetic spectrum
40 min · 1 practice tasks · quizArrange the electromagnetic spectrum in order of increasing frequency.
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Properties of electromagnetic waves
40 min · 1 practice tasks · quizDescribe the properties shared by all electromagnetic waves.
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Energy of electromagnetic waves
40 min · 1 practice tasks · quizDetermine the energy of an electromagnetic wave using E = hf.
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Radio waves
40 min · 1 practice tasks · quizDescribe radio waves and their applications.
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Microwaves
40 min · 1 practice tasks · quizDescribe microwaves and their applications.
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Infrared and visible light
40 min · 1 practice tasks · quizDescribe infrared radiation and visible light and their applications.
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Ultraviolet radiation
40 min · 1 practice tasks · quizDescribe ultraviolet radiation, its uses and its hazards.
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X-rays and gamma rays
40 min · 1 practice tasks · quizDescribe X-rays and gamma rays and their applications.
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Hazards and safe use of electromagnetic waves
40 min · 1 practice tasks · quizDescribe the hazards of electromagnetic radiation and review the node.