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4. What does AM and FM stand for? Does AM or FM have better sound quality? What are the differences between them?
5. What is an antenna and how is it used in a radio?
6. How do radios turn AM and FM signals back into sound?
7. Is there a difference between an analog and digital radio?
8. Why don't radio waves get all mixed up?
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Building Your Own Crystal Radio (student handout continued)
