Have to go through a medium (air, water, rock) The disturbance travels not the particles.
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Transcript of Have to go through a medium (air, water, rock) The disturbance travels not the particles.
![Page 1: Have to go through a medium (air, water, rock) The disturbance travels not the particles.](https://reader030.fdocuments.us/reader030/viewer/2022032604/56649e635503460f94b5f654/html5/thumbnails/1.jpg)
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Longitudinal Waves
Have to go through a medium (air, water, rock)
The disturbance travels not the particles.
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Transverse Waves
Does not have to pass through a medium
Particles move up and down
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Parts of a Transverse Wave
Crest- the highest point Trough- the lowest point
Rest position- the position of the wave before any disturbance
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Amplitude
the greatest distance that wave particles move from their rest position
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Fig. 7.2
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Wavelength () the distance between one point
in the wave to the nearest point just like it
Transverse:› Crest to crest› Trough to trough
Longitudinal:- Compression to Compression- Rarefaction to Rarefaction
wavelength
wavelength
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Frequency ( f )
# of waves passing a point in 1 second
F = Unit is Hertz (Hz)
– shorter wavelength higher frequency
1 second
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↑Frequency =↓wavelength
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Humans can hear 20Hz to 20KHz Lose hearing of high pitches as you
get older Bass lower frequency and less energy
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1. Indicate the interval which represents one full wavelength.
A. a to c B. b to d C. a to g D. c to g
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Electromagnetic Spectrum
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Radiation Traveling in Space
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Radio Wavelengths
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Microwaves
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Infrared Radiation
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Visible Light
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Ultraviolet
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X-Rays
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Gamma Rays
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Type of Radiation
Wavelength Dangerous Detected By Blocked By
Radio Longest No Radio Receiver
Viaducts, Power lines
Microwaves Longer No Heated Food Water
Infrared (heat)
Long No Thermometer Clouds
Light (ROY G BIV)
Medium No Eyes Eyes
Ultra Violet Short Yes Skin Ozone Layer
X-Rays Shorter Yes Film Earth’s Magnetic Field
Gamma Shortest Yes Geiger Counter
Earth’s Magnetic Field
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Three Series of Spectral Lines of Atomic Hydrogen
Fig. 7.9
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Emission and Absorption Spectraof Sodium Atoms
Fig. 7.B