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Waves: frequency, refraction, ultrasound and seismic waves
Fichas del conjunto (18)
- 1What is frequency?Number of waves passing a fixed point per second, measured in seconds.
- 2AmplitudeMaximum displacement that any particle achieves from its undisturbed position in metres
- 3WavelengthThe distance from one point on a wave to the equivalent point on the next in metres.
- 4PeriodTime taken for one complete oscillation in seconds
- 5What is a wave speed?The speed at which the energy is transferred.
Measure of how far the wave moves in one second - 6Wave speed=Frequency x wavelength
- 7The direction of refraction depends on...-The angle at which the wave hits the boundary.
-The material involved. - 8What is the refractive index?The way in which a material affects refraction
- 9What is the speed of an ultrasonic wave?Frequency greater than 20kHz, so cannot be heared by humans.
- 10What happens when a wave meets a boundary between two medias?It's partially reflected
- 11Uses for ultrasound in the Industry-Detecting defects in materials without cutting them.
- 12What is Echo sounding used for?Ultrasonic waves fpr detecting objects in deep water of measuring the depth in water.
- 13What are the two types of seismic waves?P-waves (Primary)
S-waves (secondary) - 14P-waves:-Longitudinal waves
-Travel at the speed of sound, twice as fast as S-waves.
-Travel at different speeds through solids and liquids. - 15S-waves:-Transverse waves
-Not able to pass through liquids. - 16What type of wave are electromagnetic waves?Transverse waves
- 17What is the speed of EM waves?Speed of light, in air or vacuum.
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- Descripción
- Fichas sobre Sin título, creado por Mikolaj Ochocki el 18/01/2018.
- Creado por
- Mikolaj Ochocki
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