Properties of Waves.

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Presentation transcript:

Properties of Waves

Amplitude is the amount of energy in a wave https://www.youtube.com/watch?v=L6xVw-SRks4#t=12 Amplitude is the amount of energy in a wave The greater the amplitude, the more energy the wave has

Amplitude of a Transverse Wave The amplitude is the greatest difference in the size of a wave It can be measured from the resting point to the crest or trough of the wave Instructional Approach(s): The teacher should present the information on the slide while the students record the important information on their notes

Larger amplitude = More Energy Less Energy Transferred More Energy Transferred Instructional Approach(s): The teacher should present the information on the slide while the students record the important information on their notes

Amplitude of a Longitudinal Wave The amplitude is the greatest density in the compression of the wave It is determined by how great the compressions are Instructional Approach(s): The teacher should present the information on the slide while the students record the important information on their notes

Frequency Wave frequency is the number of complete waves that pass a given point in a certain amount of time. The more energy, the higher the frequency

Frequency Frequency is measured in units called hertz (Hz). A wave that has a frequency of 1 wave per second has a frequency of 1 Hz If two waves pass every second, then the frequency of a wave is 2 per second, or 2 Hz.

Wavelength The wavelength is the distance between two corresponding parts of a wave.

Wavelength On a transverse wave, the wavelength is measured from crest to crest or trough to trough How is this different From measuring Amplitude?

Wavelength On a longitudinal wave, the wavelength is measured from the center of a compression to the center of the next compression When the compression is dense, it means that the wave’s amplitude is large.

Speed The speed of a wave is how far the wave travels in a given length of time. The formula for speed is: Speed =Wavelength x Frequency

Speed The wavelength of a wave on a rope is 10 cm, and it’s frequency is 3Hz. Speed = 10 cm X 3Hz Speed = 30 cm/second

Your Assignment Complete the “Profile of a Wave” Sheet on you own using your notes. You may also refer to Chapter 15 in your Science book for additional help.