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Wave notes 11.5 and 11.6.

Published byLawrence Lindsey Modified over 5 years ago

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Presentation on theme: "Wave notes 11.5 and 11.6."— Presentation transcript:

1 Wave notes 11.5 and 11.6

2 WAVE A disturbance that carries energy while traveling from one location to another.

3 2 TYPES OF WAVES LONGITUDINAL TRANSVERSE

4 ALWAYS NEED A MEDIUM TO TRAVEL THROUGH.
LONGITUDINAL WAVE ALWAYS NEED A MEDIUM TO TRAVEL THROUGH.

5 A substance through which waves travel. Examples: Water Metal air
MEDIUM A substance through which waves travel. Examples: Water Metal air

6 Longitudinal Waves VIBRATE PARALLEL TO THE DIRECTION THE WAVE TRAVELS.
EXAMPLES: Sound, earthquake and shock waves Have to have a medium!

7

8 Transverse Waves Vibrate perpendicular to the direction the wave travels. Examples: Light waves (all electro-magnetic waves) are transverse Do not require a medium Crest or Wavefront Amplitude Trough Wavelength

9 electro-magnetic waves
are transverse!!! Do not require a medium! Example: sun light waves, go through the vacuum of space. Crest or Wavefront Amplitude Trough Wavelength

10 Amplitude Measure of a waves energy
Amplitude Measure of a waves energy. Wavelength distance from one crest to the next crest.

11 Frequency The number of wavelengths per second
Take the # of wavelengths, divide by the # of seconds 12 seconds

12 Electro-Magnetic Spectrum
Is sound on this spectrum? Which side has more energy? Which side has a longer wavelength? Why are there different colors?

13 Surface wave Interference Neither transverse or longitudinal.
Moves in a circular motion. Example: water Interference Occurs when 2 or more waves meet while traveling in the same medium.

14 1. Constructive: when 2 waves collide and they add up.
2 types of interference 1. Constructive: when 2 waves collide and they add up.

15 2. Destructive: When the 2 waves collide they cancel each other out or lessen the amplitude.

16 Constructive and Destructive interference images.

17 Reflection A light ray hits an object and then reverses direction

18 Absorption Light ray disappears into a material. Light Ray Object

19 Refraction Light ray passes through an object and changes angle.

20 Diffraction Light waves spread out after passing through a small opening

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