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Record your observations about what happens to a wave when it reaches the boundary between two media.

User Cush
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Answer:

When a wave reaches a boundary between 2 media it bounces back into the first medium

Explanation:hope this helps

User GeminiYellow
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Answer:

When a wave reaches a boundary between two media, usually some or all of the wave bounces back into the first medium. The return of a wave back into its original medium is called reflection. When light is incident on a rough surface, light is reflected in many directions.

Step-by-step explanation:

User CLod
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