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# 3.3

All waves begin with a source of ______. energy
A _____ is a disturbance that transfers energy form one place to another. wave
When a flag waves in the wind, the flag ripples back and forth as the energy _______ along the flag. travels
A ________ wave travels only through matter mechanical
Matter __________transfers as a wave moves. doesn't
A _________ wave can travel through empty space or through matter. electromagnetic
There are three types of wave motion- transverse, __________, and a combination of both. longitudinal
A ____ wave is a wave which the disturbance is perpendicular to the direction the wave travels. transverse
A ________ wave is a wave that makes the particles of a medium move back and forth parallel to the direction the wave travels. longitudinal
Two common waves in nature are water waves and ______ waves. seismic
The ______ of a wave is the distance from one point, such as the crest, to the corresponding point to the next wave. wavelength
The ______ of a wave is the number of wavelengths that pass a point each second. frequency
Frequency is measured in ______ (Hz) hertz
Wave speed depends on the type of material, or _______ , a wave travels through. medium
The maximum distance a wave varies from its rest position it the _________ of the wave; the more energy a mechanical wave has. amplitude
When you knock on one side of the door, the sound travels as __________ sound waves through the door. longitudinal
These waves travel through the ________ that makes up the door to the air on the other side. air particles
The particles that make up the door _______ some of the sound energy; they increase their motion changing to thermal energy. absorbed
This causes a _____ in the sound. decrease
Some of the energy of your knock bounces, or _______, back into the room. reflects
This is why you ______ the sound hear.
Waves that bounce off a surface follow the law of _______ . reflection
The angle between the _______ (incoming) wave and the normal is equal to the wave between the reflected wave and the normal. incident
________ is the change in the direction of a wave as it changes speed, moving from one medium into another. refraction
When entering a medium, waves refract toward the normal if the __________. slow down
And away from the medium the ___________ speed up
The change in direction of a ______ when it travels past the edge of an object or through an opening is called diffraction wave
Sound wave spread around a ______ due to diffraction. corner
Created by: mathelai4079

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