Mechanical Ways to Detect Objects and Explore Internal Structures

The video tutorial covers the nature of sound waves, their detection by the human ear, and the range of human hearing. It explains ultrasound waves, their higher frequencies, and their applications in medical and industrial imaging. The tutorial also discusses seismic waves, their types, and how they provide insights into the Earth's core structure. Finally, it covers echo sounding, a technique using high-frequency sound waves to measure water depth and detect underwater objects.

Describe the two types of seismic waves and their significance.

What is echo sounding and how is it used to measure water depth?