Term means movement through a medium

Term means movement through a medium

• A. Propagation
• B. Transmission
• C. Diffusion
• D. Conduction

Answer: (A)

Propagation captures how a wave or disturbance moves through a medium, carrying energy and information as it travels from the source to other points. Think of a sound wave rippling through air or a light wave moving through glass—the defining idea is the wavefront advancing through the material itself. Transmission is more about sending a signal from one location to another and can involve different channels, not the detailed movement inside the medium. Diffusion describes random spreading due to concentration differences, not directional wave travel. Conduction refers to energy transfer within a substance by direct contact of its particles, such as heat moving through a metal, which is a specific transfer mechanism rather than the general notion of movement through a medium. So the term that means movement through a medium is propagation.

Propagation captures how a wave or disturbance moves through a medium, carrying energy and information as it travels from the source to other points. Think of a sound wave rippling through air or a light wave moving through glass—the defining idea is the wavefront advancing through the material itself. Transmission is more about sending a signal from one location to another and can involve different channels, not the detailed movement inside the medium. Diffusion describes random spreading due to concentration differences, not directional wave travel. Conduction refers to energy transfer within a substance by direct contact of its particles, such as heat moving through a metal, which is a specific transfer mechanism rather than the general notion of movement through a medium. So the term that means movement through a medium is propagation.