2. Interference

3. Interference of Waves When waves ______ at the same place at the same time, ________________ occurs

4. Constructive interference - When _____________ parts of a wave _________ Ex: crest/crest, compression/compression -_________ on each other -Also called reinforcement or ___ _________

5. - when the _____________ parts of a wave __________ -________ _______ ________ _________ -Crest/trough, compression/rarefaction -Also called _____ ___ ___________ Destructive interference

6. Unit 6 Waves/Sound Resonance – when the frequency of a _______ vibration on an object matches the ___________ frequency of that object. _______s – effect that results when __ _________of slightly different frequencies are sounded _____________. Some __________ (louder) and some _____________ (softer)

7. Beats

8. Resonance

9. One Result of Superposition Standing Wave: ____ __________travelling in ___________ directions with the same _______________ and ____________

10. Standing Waves The ___________ conditions and s________ of waves determine which ____________ are allowed. The ends of the __________ cavity have forced _________ or _____________

11. Closed at One End L AntinodeNode