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Unit D, Chapter 1:Waves - Coggle Diagram
Unit D, Chapter 1:Waves
Chapter 1.1
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As forces are used to change the motion of an object, these forces can cause a disturbance.
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One example is a wave, which crashed upon the shore over and over again, however, the waves to not pile up on the shore; the wave transfers energy through kinetic energy.
Transverse Waves - the direction in which a wave travels is perpendicular, or towards the direction of the disturbance.
Longitudinal Waves - The waves travel the same direction as the disturbance. One example is sound waves, the molecules move in the same direction as the movement of the wave.
Chapter 1.2
The Crest - The highest point, or peak of a wave.
A Trough - the lowest point, or the valley of a wave.
Amplitude - For a transverse wave is the distance between a line in the middle of a wave and a crest or trough. The amplitude indicates the energy that a wave is carrying.
Wavelength - The distance from one wave crest to the next wave crest, or trough to trough.
Frequency - The number of waves passed a fixed point in a certain amount of time. Ex. number of crests per second.
When frequency increases, the wavelength shortens. As frequency decreases, wavelength increases.
Wave speed is found by measuring the frequency and wavelength. The formula is Speed = Wavelength x Frequency.
Chapter 1.3
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Diffraction occurs in all types of waves.Reflection occurs in water, sound, and light waves. Refraction occurs in light waves.
Interference - The meeting and combining of waves. Constructive interference is the adding of two waves. Destructive interference is the subtracting of two waves. When two identical waves meet, the crests meet up in some places, or to the troughs in others.