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Science Waves
| Question | Answer |
|---|---|
| Wave | A disturbance that transfers energy from place to place |
| Energy | The ability to do work. |
| Medium | A material through which a wave travels. |
| Mechanical Wave | A wave that only travels through a medium. |
| vibration | A repeated back and forth or up and down movement. |
| Transverse Wave | Waves that move a right angles of the rest line. |
| Crest | The high part of a transverse wave. |
| Trough | The low part of a transverse wave. |
| Longitudinal Wave | A wave in which the medium moves parrallel to the rest line. |
| Compression | The part of a longitudinal wave when the molecules are close together. |
| Rarefaction | The part of a longitudinal wave when the molecules ar far apart. |
| Amplitude | The distance from the rest line a crest or trough goes. |
| Wavelength | The distance between to corresponding parts of the wave. |
| Frequency | The number of time a wave passes in a given number of seconds. |
| Hertz | The amount of wavelenghts that pass in one second. |
| Reflection | When a object or wave hits a surface where it cannot pass through, but come back |
| Law of Reflection | The angle of incidence= the angle of reflection |
| Refraction | The bending of waves due to change in speed. |
| Diffration | When a wave bends around or through a barrier and spreads out. |
| Interference | The interaction between two waves that meet. |
| Constructive Interference | When two waves combine to make a higher amplitude. |
| Destructive Interference | When two waves combine to make a smaller amplitude. |
| Standing Wave | A wave that appears to stand in one place when it is two waves passing each other. |
| Node | Points of zero amplitude on a node. |
| Antinode | The points of maximum amplitude on a node. |
| Resonance | An increase in the amplitude of vibration that occurs when external frequencies match the natural frequency. |
| Echo | Sound Waves that reflect when they hit a surface. |
| Elasticity | The ability of an object to bounce back after being disturbed. |
| Density | The amount of matter, or mass in a given space, or volume. |
| Loudness | The perception of energy in a sound. |
| Intensity | The amount of energy a sound carries per second through a unit area. |
| Decibel | The unit for measuring loudness |
| Pitch | The sound how high or low a person percieves of the sound. |
| Ultrasound | Sound waves that have frequincies above the range of the human ear. |
| Infrasound | Sound waves that have frequencies below the range of the human ea |
| Larynx | The part of the throat that produces noise. |
| Doppler Effect | The change in frequencies due to the postion of the observer. |
| Music | A set of notes that when combined are pleasing. |
| Fundamental Tone | The lowest natural frequency of an object. |
| Overtone | The object's higher natural frquency of an object. |
| Acoustics | The study of how sound reacts with the enviornment. |
| Reverberation | The echoes of a sound of heard after the sound of the source stops. |
| Ear Canal | Collects sound waves. |
| Eardrum | A drumlike membrane that vibrates when it hears sound waves. |
| Cochlea | A fluid cavity shaped like a conch shell. |
| Echolocation | The reflection of sound waves to determine the distance of objects. |
| Sonar | Using sound waves the create a picture of objects. |
| Sonogram | Using ultrasound to make a picture. |
| Formula for Frequency | frequency=speed - wavelength |
| Formula for Wavelenght | Wavelenght= speed ----- frequency |
| Formula for Speed | Speed=Frequency x wavelength |
Created by:
062515
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