Can someone please explain how ultrasound scan's work?

  • 0 votes

It's for Edexcel triple P3, thank you!

Posted Wed 9th May, 2012 @ 22:44 by SS

1 Answer

  • 1 vote

I don't know if this is enough detail for P3 but this is what I know:

In an ultrasound scan the light is reflected because of the change in density (water is denser than air). Whenever a wave reaches a medium with a different density, some of the wave is reflected at the boundary. These reflected waves are processed by computer to produce a video image of the foetus.

Hope this helps :)

Answered Sun 13th May, 2012 @ 15:52 by Georgia