Waves. Radio waves, x-ray, light, sound, seismic waves (p waves, s waves), waves at the beach!. Definition of wave. 1. A wave is a disturbance that travels through matter (air, water, rock) OR space (no matter) 2. Waves carry or transmit energy. . 2 Kinds of Waves. Mechanical Waves
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Radio waves, x-ray, light, sound, seismic waves (p waves, s waves), waves at the beach!
1. Transverse wave: particles move up and down while the wave moves left or right; particles move perpendicular to the path of the wave.
2. Longitudinal waves (slinky, sound waves) particles move back and forth, or parallel to the path of the wave.
3. Surface waves (beach ball example) combination of transverse and longitudinal.
1. Transverse wave: particles move up and down while the wave moves left or right.Types of Waves
Frequency: the number of wavelengths per second
Wavelength: the distance from peak to peak or trough to trough.
Speed= wavelength period
18,000 L = 1.8 x 104 L
0.0000021 m = 2.1 x 10-6m
4 x 10-7m to 7 x 10-7 m
4x1014 to 7.5 x 1014 hertz
10-19 to 5x10-19Joules
1 x 10-8 to 4 x 10-7 m
7.5x1014 to 3 x 1016 hertz
5 x 10-19 to 2x10-17Joules
Different kinds of elements each give off a different spectra.
United streaming: Exploring Space: the Universe: “spectroscope”A spectroscope is a tool that will separate visible light into the bands or spectrum of different colors.
Police Car Siren: http://www.colorado.edu/physics/2000/applets/doppler2.html
Wavelengths from the perspective of the ear not the car.