Final answer:
A wave is a disturbance that propagates or moves from the place it was created. Waves can travel through various mediums, including solids, liquids, and gases.
Step-by-step explanation:
A wave is a disturbance that propagates or moves from the place it was created. Waves can travel through various mediums, including solids, liquids, and gases. However, light is an example of a wave that can travel through a vacuum, like outer space.
When a wave travels, it carries energy from one place to another without transferring mass. As the wave moves, particles in the medium oscillate up and down or back and forth. For example, when a stone is dropped in a pond, it creates waves that cause the water surface to oscillate.
In the case of light waves, they are transverse waves, meaning the oscillations are perpendicular to the direction of wave propagation. Light waves can travel through materials that fill up empty space in the universe. They show wavelike behavior with characteristics such as frequency and wavelength.