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Match the following wave phenomena with a suitable example. Two water waves collide a create a larger wave Sound waves from two sources meet and the noise gets dimmer A source of sound is travelling relative to an observer which causes the observer to hear a lower pitch A radar wave bounces off a satelite and returns to earth The sound of a conversation bends around the corner of a building Examples: Frequency, refraction, diffraction, constructive interference, reflection, wavelength, doppler effect, destructive interference.

Sagot :

ANSWER

• Constructive interference:, ,two water waves collide to create a larger wave

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• Destructive interference:, ,sound waves from two sources meet and the noise gets dimmer

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• Doppler effect:, ,a source of sound is traveling relative to an observer which causes the observer to hear a lower pitch.

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• Reflection:, a radar wave bounces off a satellite and returns to Earth

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• Diffraction:, ,the sound of a conversation bends around the corner of a building.

EXPLANATION

Let's see what these phenomena mean, which will help us match the examples:

• Frequency,: it is the number of cycles the wave makes in 1 second.

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• Wavelength,: it is the distance between any two successive crests of a wave.

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• Reflection,: occurs when a wave hits a surface and bounces back.

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• Refraction,: occurs when a wave traveling through a certain medium enters a new medium and changes its direction.

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• Diffraction,: occurs when a wave passes through an opening in an obstacle - it can be a slit, a hole, a corner, etc.

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• Constructive interference,: occurs when the interference of two waves results in the reinforcement of the waves.

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• Destructive interference,: occurs when the interference of two waves results in the cancelation of a part of the totality of the waves.

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• Doppler effect:, it is the phenomenon when the frequency of a wave changes - increases or decreases, as the observer or/and the source of the wave change their positions relative to the other.

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