Lesson 3: Properties of waves

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Presentation transcript:

Lesson 3: Properties of waves Unit 7: WAVES Lesson 3: Properties of waves

Speed of Waves (affected by medium) During 1 period, the wave travels 1 wavelength. 5 min  “Universal Wave Equation”

Find: a) The period and the frequency of the waves. Example (Try it!): Bill was sitting on the dock when he noticed ocean waves with their crests 3.5 m apart. A buoy nearby bobbed up and down 24 times in a minute. Find: a) The period and the frequency of the waves. b) The speed of the waves. 20 min

Brain Break!

Reflection Fixed end: wave is reflected on opposite side Loose end: wave is reflected on same side 5 min

Constructive interference Destructive interference (cancelling out) Principle of Superposition When two waves coincide (pass through each other) their amplitudes add algebraically. Constructive interference Destructive interference (cancelling out) 5 min

Practice Time! Pg. 181 #2-12 Pg. 194 #5 and 11 20 min