| A | B |
|---|
| Wave | A disturbance that transfers energy from one place to another without transferring matter. |
| Transverse Wave | A wave in which the disturbance is perpendicular to the direction the wave travels. |
| Medium | A material in which a wave travels. |
| Longitudinal Wave | A wave in which the disturbance is parallel to the direction the wave travels. |
| Mechanical Wave | A wave that can travel only through matter. |
| Electromagnetic Wave | A transverse wave that can travel through empty space and through matter. |
| Absorption | The transfer of energy from a wave to the medium through which it travels. |
| Transmission | The passage of light through an object. |
| Reflection | The bouncing of a wave off a surface. |
| Refraction | The change in direction of a wave as it changes speed in moving from one medium to another. |
| Diffraction | The change in direction of a waves when it travels by the edge of an object or through an opening. |
| Interference | Occurs when waves overlap and combine to form a new wave. |
| Vacuum | A space that is empty of matter (atoms). |
| Scattering | reflection of light in all directions |
| sound energy | Energy caused by an object's vibrations |
| electromagnetic energy | a form of energy that travels through space in the form of waves |
