Which type of wave is classified as an electromagnetic wave?

Radar is classified as an electromagnetic wave because it consists of oscillating electric and magnetic fields that propagate through space. Electromagnetic waves do not require a medium to travel, allowing them to move through a vacuum, as is the case with radar signals used in various technologies like weather monitoring and air traffic control. Radar works by emitting radio waves, which are a specific type of electromagnetic radiation, and detecting the reflected waves that bounce back from objects. This characteristic is unique to electromagnetic waves, distinguishing them from the other types listed.

Tidal waves, sound waves, and earthquake waves are not electromagnetic; they require a medium (water for tidal waves, air for sound waves, and the ground for earthquake waves) to travel through.