Year 9 - a digital version of the Edexcel P1.19 Ultrasound lesson

This resource contains a 13-slide theory lesson.
Slide number 1 is an introductory slide explaining the lessons learning objectives.
Slide number 2 is an animated GIF reminder that sound is a longitudinal wave.
Slide 3 is an excellent summary image to show the frequencies of infrasound, sound and ultrasound and the animals that can use each one.
Slide 4 is a revision of basic wave structure and terminology.
Slide 5 looks at how sound waves can reflect to give an echo and explains how most ultrasound applications use this ‘echo’ to create an image.
Slide 6 and 7 explain how ultrasound sonar is used to detect fish\ submarines under the water.
Slide 8 explains how bats use echolocation – ultrasound clicks to detect prey in the dark.
Slide 9 looks at a commercial, possibly unethical use of ultrasound to keep teenagers from congregating.
Slide 10 and 11 explain how ultrasound is used to look at an unborn fetus to detect the gender/abnormalities.
Slide 12 is the book-work reference.
If you liked this lesson, please don't forget to review it and feel free to browse my shop where there are a few more.