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What is a wave? |
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a disturbance that transmits energy through matter or space. |
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Calculate the speed of a wave. |
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wavelength/period |
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What do waves transfer? |
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energy |
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What is the difference between a mechanical wave and an electromagnetic wave? |
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electromagnetic- does not require a medium, disturbance in electric and magnetic fields. |
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What is the connection between vibrations and transformations of energy? |
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simple harmonic motion- faces that push in opposite directions |
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How do particles move in transverse and longitudinal waves? |
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transverse- perpendicular , longitudinal- parallel |
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How do particles move in a surface wave? |
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circles |
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How can you measure the amount of particle vibration? |
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period |
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How can you determine wave speed? |
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frequency x wavelength |
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What does the speed of a wave depend on? |
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medium |
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What do you know about ALL electromagnetic waves as they travel through empty space? |
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they travel at the same speed |
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What is the relationship between frequency and pitch? |
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pitch is determined by frequency |
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Understand the Doppler effect? |
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an observed change in frequency of a wave when the source/observer is moving |
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Understand how waves behave. Reflection, refraction, and diffraction. |
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reflection- the bouncing back of a wave when it meets a surface, diffraction- the bending of a wave as it passes an edge or opening, refraction- the bending of waves as they pass from one medium to another |
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What happens when two waves interfere? |
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constructive- combining of waves where it is bigger than the original, destructive- resulting wave is smaller |
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What is a standing wave? |
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a vibration of a system in which some points remain fixed while others between vibrate |
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