Wave behavior: reflection and refraction
When a wave, whether light or sound, reaches a new material, it can bounce off (reflection), pass through (transmission), or get absorbed and have its energy turn into heat, and often some combination of all three happens at once rather than just one alone. Exactly how much of each happens depends on the specific wave and the specific material it hits.
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This final covers a lot of topics, so it's split into 2 parts. Each part includes a question from every one of its topics.
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