Waves Introduction Chapter 10 Section 1 and 2 Physics Standard 4.
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Transcript of Waves Introduction Chapter 10 Section 1 and 2 Physics Standard 4.
![Page 1: Waves Introduction Chapter 10 Section 1 and 2 Physics Standard 4.](https://reader035.fdocuments.us/reader035/viewer/2022062720/56649f0e5503460f94c22505/html5/thumbnails/1.jpg)
Waves Introduction
Chapter 10 Section 1 and 2
Physics Standard 4
![Page 2: Waves Introduction Chapter 10 Section 1 and 2 Physics Standard 4.](https://reader035.fdocuments.us/reader035/viewer/2022062720/56649f0e5503460f94c22505/html5/thumbnails/2.jpg)
Physics
Science that deals with
matter, energy and
their interactions
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Definition• Wave: disturbance that carries
energy through matter or space.
• Matter through which a wave travels is called its medium.
• Waves transfer energy and energy spreads out at it travels.
![Page 4: Waves Introduction Chapter 10 Section 1 and 2 Physics Standard 4.](https://reader035.fdocuments.us/reader035/viewer/2022062720/56649f0e5503460f94c22505/html5/thumbnails/4.jpg)
Medium Examples
What is the Medium?
What is the Medium?
Water
Air
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Mechanical vs. Electromagnetic
• Mechanical waves: require a medium to travel through. Ex: Sound
• Electromagnetic waves: do not require a medium. Ex. light
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Mechanical Types
• 1) Transverse: causes particles of medium to vibrate perpendicularly to direction wave travels.
• Ex: water• http://www.acoustics.salford.ac.uk/feschools/waves/flash/transverse.swf
Transverse Wave
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Transverse Wave
• Crest: highest pt• Trough: lowest pt• Amplitude: greatest
distance that particles in medium move when a wave passes.
• Wavelength: dist. from 1 crest of wave to next crest.
• Frequency: # of full wavelengths that pass a point in a given time.
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Characteristics of a Transverse Wave
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Rules• Higher amplitude + Short wavelength
wave carries much energy.• Low amplitude + long wavelength
wave carries little energy.
Which One Carries More Energy?
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Mechanical Types
• 2) Longitudinal: causes particles of medium to vibrate parallel to direction the wave travels. Ex: sound
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Longitudinal Wave Characteristics
• Compression: area where particles are close together.
• Rarefaction: area where particles are spread out.
![Page 12: Waves Introduction Chapter 10 Section 1 and 2 Physics Standard 4.](https://reader035.fdocuments.us/reader035/viewer/2022062720/56649f0e5503460f94c22505/html5/thumbnails/12.jpg)
Sound: Longitudinal Wave
• Sound wave speed depends on medium it is in.
• Sound in air: 340 m/s
• Sound in water: 3 x’s faster than in air.
• Sound in solid: 15-20 x’s faster than in air.