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Guided Reading: Wave Interactions

Start on page 379, “Interference” and answer the following questions as you read: 1. When the ____________ of one wave overlaps the ____________ of another, their individual effects ___________ together. 2. The result is a wave of __________________ amplitude. This is called __________________ ________________________, or reinforcement (Figure 25.10, top). 3. When the _____________ of one wave overlaps the _______________ of another, their individual effects are ___________________. 4. The _____________ part of one wave simply fills in the __________ part of another. This is called ________________________ _________________________, or cancellation (Figure 25.10, bottom). 5. _______________________ is characteristic of all wave motion, whether the waves are _______________ waves, _______________ waves, or _______________ waves. Continue on to page 380, “Standing Waves” and answer the following questions as you read: 6. Define standing wave:

7. In a standing wave certain parts of the medium, called ______________, remain stationary. 8. Interestingly enough, you could hold your fingers on either side of the rope at a ___________, and the rope would not touch them. 9. The positions on a standing wave with the largest ___________________ are known as ___________________. 10. Antinodes occur halfway between the _____________. 11. Refer to Figure 25.13, what does the caption read?

12. Standing waves are the result of _____________________. 13. When two waves of equal ___________________ and ____________________ pass through each other in opposite directions, the waves are always out of _______________ at the nodes. The _________________ are stable regions of _____________________ interference. 14. Standing waves can be produced in either ___________________ or _____________________ waves.