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* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
WAVES! Mechanical Waves What is a wave? A wave is a rhythmic disturbance that transfers energy from one place to another. Mechanical waves need a medium! A medium is the thing that a wave travels through. Can sound exist where there is no medium to carry it? A more realistic Star Wars battle. There are 2 kinds of mechanical waves. Transverse waves: The medium vibrates at a right angle to the direction it moves. There are 2 kinds of mechanical waves. Longitudinal waves: The medium vibrates the same direction the wave moves. Which kind of wave is an ocean wave? Which kind of wave is a sound wave? 4 Important Wave Measurements Amplitude: Frequency: Wavelength: Velocity: Amplitude Amplitude is the strength of a wave. In a transverse wave, the more amplitude a wave has, the taller the wave is. Is this baby getting hit by a large or small amplitude? How would you describe these waves scientifically? The amplitude of a sound wave can’t be seen, but it can be heard. I like to whisper too... Big amplitudes need big speakers. Frequency The frequency of a wave is the number of waves per second. Frequency Frequencies are measured in Hertz (Hz). Frequency and pitch are synonyms. Frequency The human range of hearing is 20-20,000 Hz. Below 20 Hz is considered infrasonic. Above 20,000 Hz is considered ultrasonic. Frequency Let’s test your range! Wavelength The wavelength is the distance between two similar parts on a wave. Wavelength Wavelengths are measured in meters. Wavelength As wavelength increases, frequency... Velocity The velocity of a wave tells how fast it’s moving in m/s. It can be calculated using the formula velocity = wavelength x frequency The speed of any wave is constant in a given medium For example, sound waves always travel at 767 mph in normal atmosphere that is room temperature. A little about the speed of sound. Velocity Light on the other hand always goes 670,000,000 mph when in a vacuum like outer space. Needless to say, light is MUCH faster than sound.