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Science
study for waves 7th grade
| Question | Answer |
|---|---|
| What is a medium | substance or material through which a wave travels. |
| What is a wave | a disturbance through energy |
| diffraction | the spreading out of waves when they go through a gap, or past the edge of a barrier |
| compression | waves where the vibration is parallel to the direction of motion |
| constructive interference | when two waves overlap in such a way that they combine to create a larger wave |
| destructive interference | when two waves overlaps in such a way that they cancel out the wave |
| refraction | The bending of waves due to a change in speed is called refraction |
| The interaction between two waves that meet is called | interference |
| Mechanical waves are created when a source of energy causes a medium to | move |
| The speed of a wave is its wavelength multiplied by its | frequency |