Waves
Published on Nov 18, 2015
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PRESENTATION OUTLINE
WAVES
BY: LAURA C. HOUR: 1ST
What is a wave?
A wave is a disturbance that transfers energy from place to place. Ex: longitudinal & transverse
Transverse wave
Waves that move the medium at right angles to the direction in which the waves travel are called Transverse waves. (Transverse means "across")
Longitudinal wave
Longitudinal waves move the medium parallel to direction in which the waves travel.
What carries a wave?
Most kinds of waves need something to travel through. Waves travel along the surface of water.the material through which a wave travels is called a Medium.
Properties of Waves
The basic properties of waves are Amplitude, Wavelength, Frequency, and Speed.
Photo by Sprengben [why not get a friend]
Amplitude
Amplitude is the maximum distance that the particles of the medium carrying the wave move away from their rest position.
Wavelength
The distance between two corresponding parts of a wave is its wavelength.
Frequency
Wave frequency is the number of complete waves that pass a given point in a certain amount of time.
Speed
The speed of a wave is how far the wave travels in a given length of time.
Photo by geezaweezer
Interactions of Waves
Some interactions of waves include Reflection, Refraction, Diffraction, and Interference.
Reflection
When an object it a wave hits a surface through which it cannot pass, and bounces back, is called reflection.
Photo by archer10 (Dennis)
Refraction
The bending of waves due to a change in speed is called refraction.
Photo by Stuck in Customs
Diffraction
When a wave moves around a barrier or through an opening in a barrier, it bends and spreads out. This is called, diffraction.
Photo by vgm8383
Interference
Interference is the interaction between waves that meet.
Photo by marcp_dmoz
Standing Waves
If the incoming wave and reflected wave have just the right frequency, they produce a combined wave that appears to be standing still. This is called a standing wave.
Seismic waves
A seismic wave is a wave produced by an earthquake. Ex: P wave (primary wave.) S wave (secondary waves).
Sound Waves
Sound is a disturbance that travels through a medium as a longitudinal wave.
Electromagnetic Waves
Is a transverse wave that transfers electrical and magnetic energy. An electromagnetic wave consists
Photo by lecates
