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WAVES
Term | Definition |
---|---|
Waves | A repeating disturbance or movement that transfers energy through matter or space. |
Transverse Wave | In this wave, matter moves up and down and energy moves horizontally. |
Longitudinal Wave | Matter and energy move in the same direction. |
Crest | Highest point in a wave. |
Trough | Lowest point in a wave. |
Amplitude | how high the wave is. |
Wavelenght | Transverse wave: distance from crest to crest. Longitudinal wave: distance from compression to compression. |
Rarefaction | Where the wave is spread out. |
Compression | Where the wave is closer together. |
Opaque | Material that does not let any light pass through it. |
Transparent | Material that allows all the light to pass through. |
Translucent | Material that allows some light to pass through. |
Reflection | When light bounces off a shiny surface. |
Refraction | The bending or changing direction of light as it changes speed in a new medium (air, water) |
Absorption | Occurs when light strikes a material, and the energy that it carries is absorbed by the atoms of the material and is converted into thermal energy. |
Frequency | The number of waves passing a point each second. Unit is called Hertz. |
What is the relationship between frequency of a wave and energy? | Higher frequency equals higher energy. |
What is the relationship between frequency of a wave and wavelength? | Higher frequency equals smaller wavelength. |
In what medium do light waves travel faster? | In a vacuum (space) where there is no matter. |
In what medium do sound waves travel faster? | It travels faster through solids because particles are closer together. |
What is the relationship between amplitude of a wave and energy? | Higher energy equals higher amplitude. |