Answer:
The correct answer is: Light wave
Step-by-step explanation:
Mechanical waves are waves that require a medium to propagate. They transfer energy through the oscillation or vibration of particles in the medium. Examples of mechanical waves include sound waves, ocean waves, and seismic waves.
Sound waves are mechanical waves because they travel through a medium, such as air, water, or solids, by causing particles in the medium to vibrate. These vibrations create compressions and rarefactions that propagate as sound.
Ocean waves are also mechanical waves because they result from the transfer of energy through the movement of water particles. The wind provides the energy to create disturbances on the surface of the water, causing the waves to propagate.
Seismic waves are mechanical waves that occur during earthquakes. They result from the release of energy from the Earth's crust, causing vibrations to travel through the ground. These waves can be divided into two main types: P-waves (primary waves) and S-waves (secondary waves), both of which require a medium to propagate.
On the other hand, light waves are not mechanical waves. They are electromagnetic waves that can travel through a vacuum, such as space, where there is no medium. Light waves do not require particles in a medium to propagate but can still travel through various mediums like air, water, or transparent solids.
Therefore, out of the options provided, "light wave" is the example that is not a mechanical wave.