1. Properties of Waves

2. Amplitude is the amount of energy in a wave
Amplitude is the amount of energy in a wave
The greater the amplitude, the more energy the wave has

3. 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

4. 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

5. 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

6. 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

7. 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.

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

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

10. 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.

11. 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

12. 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

13. 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.