| A | B |
| wavelength | Distance between two correspnding parts of a wave |
| energy | ability to do work |
| wave | disturbance that transfers energy from place to place |
| medium | material through which a wave travels |
| vibration | repeated back-and-forth or up-and-down motion |
| transverse wave | wave that moves the medium at right angles in the direction that the wave is traveling |
| seismic wave | wave produced by an earthquake |
| matter | anything that has mass and occupies space |
| crest | highest part of a transverse wave |
| amplitude | maximum distance the particles of a medium move away from their rest positions as wave passes through medium |
| erosion | process by which water, ice, wind or gravity moves weathered rock and soil |
| frequency | number of complete waves that pass a given point in a certain amount of time |
| trough | lowest part of a tranverse wave |
| energy transfer | a moving object has energy, it can transfer energy to a nearby medium, creating a wave |
| sound wave | disturbance that travels through a medium as a longitudinal wave |
| sun's radiation | heat waves from the sun |
| water wave | surface wave |
| light energy | electromagnetic waves that are visible |
| nuclear reaction | when two atoms hit eachother and explode |
| solar energy | energy from the sun |
| transfer | moving from one place to another |
| greenhouse effect | when heat waves are reflected by gasses in the atmosphere |