We can’t hear all levels of sounds. Sound waves with very high frequencies are called ultrasound and our ears can’t detect them. Ultrasound waves have multiple uses including: detecting ...

This class focuses on the role of waves in human body systems through student-directed inquiry ... Key concepts covered include sound waves, hearing, wavelength, frequency, amplitude and heart rate.

The seismic waves' frequencies determine, in part, how far they travel and how damaging they are to human-made structures. However, the inaccessibility of fault zones means that very little is known ...