Handout - Scanning by reflection
Some examples of where ultrasound can be used
Handout - Seismic waves
Handout showing p and s waves and how they provide evidence for the structure of the Earth's interior.
s & p waves
Very short clip showing how s and p waves move through the Earth.
Knowing the speed of sound in water, the formula speed = distance / time and a computer, it is possible to use ultrasound to produce an image of the sea bed.
Sonar How it works
Explanation of how sonar is being used to map the sea floor in the caribbean.
Transverse and longitudinal wave
Very short video showing longitudinal waves and transverse waves in a slinky
Ultrasound communication bottlenose dolphin
Short nature film showing how ultrasound is useful to bottlenose dolphins
Ultrasound How it works
Nice explanation of how ultrasound works