Question

true or false: all waves form at the boundary of water and air.

Explanation:

Waves can form in various media and not just at the boundary of water and air. For example, seismic waves (earthquakes) occur within the Earth's crust, sound waves can travel through solids, liquids, and gases (not just at the air - water boundary), and electromagnetic waves (like light) can travel through a vacuum.

Answer:

false