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3.3
| Question | Answer |
|---|---|
| All waves begin with a source of____. | energy |
| A____ is a disturbance that transfers energy from one place to another. | wave |
| Matter ____ transferred as a wave moves | is not |
| When a flag waves in the wind, the flag ripples back and forth as the energy ____ along the flag. | travels |
| A ____ wave travels only though matter. | mechanical |
| An ____ wave can travel through empty space or through matter. | electromagnetic |
| There are ____ types of wave motion. | three |
| 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. |
| In water waves, water particles move in ____. | circles |
| The ____ of a wav is the distance from one point, such as the crest. | wavelength |
| The ___ of a wave is the number of wavelengths that pass a point each second. | frequency |
| Frequency is measured in ____. | 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 is the ____ of the wave. | amplitude. |
| When you knock on one side of a 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. | matter |
| The particles that make up the door ____ some of the sound energy. | absorbs |
| They increase their motion, changing to ____ energy. | thermal |
| This causes a ____ in the sound. | decrease |
| Some of the energy of your knock bounces, or ____ back into the room. | reflects |
| That is why you ____ the sound. | hear |
| Waves that bounce off the surface follow the law of ____. | reflection |
| ____is the change in direction of a wave as it changes speed. | Refraction |
| When entering a medium, waves refract toward the normal if they____. | slow down |
| The change in direction of a wave when it travels past the edge an object or through an opening is called ____. | diffraction |
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petrooli2672
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