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Light Waves: These are electromagnetic and transverse waves that can travel through a vacuum.Check out our post on sound waves for an in-depth review. They have frequencies within the human audible range (approx. Sound Waves: These are mechanical and longitudinal waves that propagate through air, water, or solids.Two common examples that are often studied to understand wave behavior are sound and light waves. Sound is an example of a longitudinal wave. Longitudinal Waves: The particles in the medium move in the same direction as the wave.Transverse Waves: In these waves, the particles in the medium move at right angles to the direction of wave propagation.Light, X-rays, and radio waves are examples. Electromagnetic Waves: These waves do not require a medium and can travel through a vacuum.Examples include sound waves and water waves. Mechanical Waves: These waves require a medium (like air, water, or a solid substance) to move through.Here are some basic categorizations of types of waves and how they propagate: The classification of waves primarily depends on how they move and what medium they require for propagation. In simpler terms, waves are a way for energy to move through materials or even in a vacuum (as in the case of light waves). Waves are disturbances that propagate through a medium or space, transporting energy from one point to another without causing a permanent displacement of the medium itself.