Download - Chapter 1: Waves
![Page 1: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/1.jpg)
Chapter 1: WavesWaves interact and transfer energy in predictable ways
![Page 2: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/2.jpg)
1.1 Waves transfer energy•How forces cause waves•How waves transfer energy•How waves are classified
![Page 3: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/3.jpg)
wavea disturbance that transfers energy from one place to another
waves transfer energy over distance without moving matter the entire distance
![Page 4: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/4.jpg)
Where Do Waves Get Energy?
Vibration-Any movement that follows the same path repeatedly. An object that is vibrating is moving. A force causes the vibration.
An object that is moving has energy.A vibrating object gives off some of its
energy to nearby particles. This movement of energy from a vibrating source outward is a wave.
Waves get their energy from a vibration.
![Page 5: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/5.jpg)
VibrationsExample: The top of a drum vibrates
after it is struck by a drum stick. It moves up and down several times creating sound.
Example: Your ear drum vibrates in response to sound which enables you to hear.
![Page 6: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/6.jpg)
mediumany substance that a wave moves through
ex. water, the ground, a rope, air
![Page 7: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/7.jpg)
Waves Through Matter and SpaceMedium-Matter or substance
through which a wave is transmitted.Water is a medium for ocean waves.Air is a medium for sound waves.All phases of matter solids, fluids,
plasmas, can act as a medium.
![Page 8: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/8.jpg)
mechanical wavesany wave that transfers energy through matter (must have matter to work)
wavelength
![Page 9: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/9.jpg)
transverse wavesthe direction in which the wave travels is perpendicular to the direction of the disturbance
![Page 10: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/10.jpg)
longitudinal wavethe wave travels in the same direction as the disturbance
![Page 11: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/11.jpg)
1.2 Waves have measurable properties•how amplitude, wavelength and frequency are measured•how to find a wave’s speed
![Page 12: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/12.jpg)
Amplitudethe distance between a line through the middle of a wave and a crest or trough.
see p. 17
![Page 13: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/13.jpg)
wavelengththe distance from crest to crestor trough to trough
![Page 14: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/14.jpg)
frequencythe number of wavelengths passing a fixed point in a certain amount of time (usually a second)
Waves / second (hertz)
![Page 15: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/15.jpg)
Wave speedspeed = wavelength x frequencyS = λ ∙ f
![Page 16: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/16.jpg)
![Page 17: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/17.jpg)
5 QQDraw a transverse wave.Label the wavelength.Label the amplitude.Draw a low amplitude transverse wave and a high frequency transverse wave.
Draw a longitudinal wave, label the rarefactions.
![Page 18: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/18.jpg)
Name Amplitude Wavelength Frequency WaveSpeed
![Page 19: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/19.jpg)
1.3 Waves behave in predictable ways•How waves change as they encounter a barrier•What happens when waves enter a new medium•How waves interact with other waves
![Page 20: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/20.jpg)
reflectionthe bouncing back of a wave after it strikes a barrier
![Page 21: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/21.jpg)
refractionthe bending of a wave as it enters a new medium
occurs because waves travel at different speeds in different mediums
![Page 22: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/22.jpg)
diffractionthe spreading out of waves through an opening or around an obstacle
![Page 23: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/23.jpg)
interferencewaves interact with other wavesthey can add energy to, or take energy away from each other
the meeting and combining of waves
![Page 24: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/24.jpg)
Suppose that you create a wave by moving a rope up and down. What will happen if you increase the energy you put into the rope? What will happen if you increase the speed of the motion?amplitude, frequency, wavelength
![Page 25: Chapter 1: Waves](https://reader035.vdocuments.mx/reader035/viewer/2022062410/568164ce550346895dd6f819/html5/thumbnails/25.jpg)
wavelengthfrequencyamplitudereflectionrefractiondiffractionmediumdisturbanceforcehertzmechanical wavewave
transverse wavelongitudinal waveinterferencecresttroughvibrationconstructive
interferencedestructive
interferencewave speedcompressionrarefactionwaves / second