pptx, 2.42 MB
pptx, 2.42 MB
P1.9 Using electromagnetic radiation lesson
This resource contains a 11-slide theory lesson.
The lesson contains an introductory slide explaining the lessons learning objectives.
Slides number 2 is a diagram showing the whole spectrum of EM frequencies.
Slide number 3 discusses how Radio waves are collected from space as part of the SETI program.
Slide 4 discusses microwave radiation used by mobile phones and concerns regarding their possible danger.
Slide 5 discusses using Infra- Red security cameras as a way of “seeing in the dark”.
Slide 6 discusses how on Earth, animals have evolved eyes because the wavelength visible light penetrates our atmosphere to reach the surface.
Slide 7 discusses how short wave UVC can be used to steriise operating instruments and water.
Slide 8 discusses using long wave UVA to prevent forgeries.
Slide 9 discusses how gamma rays can be used to sterilise food to stop it “going off”.
Slide 10 discusses how X-rays can be use (with caution) for medical imaging.
Slide 11 is the book-work reference.
Slide 12 contains the image credits.
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