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S8P4a, 4d, 4f
Physical Science
| Term | Definition |
|---|---|
| wave | Rhythmic disturbances that carry energy without carrying matter |
| medium | is the substance through which a wave can travel. Ex. Air; water; particles; strings; solids; liquids; gases |
| amplitude | is the peak (greatest) value (either positive or negative) of a wave. The distance from the undisturbed level to the trough or crest |
| wavelength | is the horizontal distance, either between the crests or troughs of two consecutive waves |
| mechanical wave | need matter (or medium) to transfer energy |
| crest | crest is the highest point on a wave. |
| trough | is the valley between two waves, is the lowest point. |
| transverse | Energy causes the matter in the medium to move up and down or back and forth at right angles to the direction the wave travels. Examples: waves in water |
| rarefraction | is the part of the compressional wave where the particles are spread apart |
| compression | is the part of the compressional wave where the particles are crowded together |
| compressional wave | A mechanical wave in which matter in the medium moves forward and backward along the same direction that the wave travels. Ex. Sound waves |
| wave energy | is a renewable energy whereby we capture the energy that is being generated naturally by waves |
| matter | medium |
| electromagnetic wave | DO NOT NEED matter (or medium) to transfer energy They do not need a medium, but they can go through matter (medium), such as air, water, and glass |