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# 1.3

## by Melisa Kelly on Feb 09, 2012

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## 1.3Presentation Transcript

• Science Starter : February 9, 2012
• The speed of a waves equals its wavelength times its amplitude .
• Wavelength measures the distance from one wave crest to the next.
• The number of wavelengths passing a point in a given time is a wave’s amplitude .
• As the frequency of a wave increase, its wavelength increases .
Write out the statement. If it is true leave it alone, if it is false change it to make it true . BE SURE TO WRITE THE DATE
• Waves Behave in Predictable Ways Pages 24-28 (section C)
• Waves interact with materials
• As you watch the ripple effect in the water, observe how the wave reacts.
• Reflection
• The bouncing back of a wave after it hits the barrier
• Example: the waves hitting the side of the container
• Refraction
• Refraction- the bending of a wave as it enters a new medium at an angle other than 90 degrees
• Example: a straw or pencil that appears broken in a glass
• Diffraction
• Diffraction- the spreading out of waves through an opening or around the edge of an obstacle
• Interference
• Interference- the meeting and combining of waves
• Constructive Interference
• Two waves add together to make a larger wave
• Destructive Interference
• Two waves that cancel each other out
•