1. Performance Indicator 8.P.3A.2 Develop and use models to exemplify the basic properties of waves (including frequency, amplitude, wavelength, and speed).

2. Preview & Pretest http://www.bbc.co.uk/schools/gcsebitesize/s cience/aqa/waves/generalwavesact.shtmlhttp://www.bbc.co.uk/schools/gcsebitesize/s cience/aqa/waves/generalwavesact.shtml

3. Frequency is a measure of how many waves pass a point in a certain amount of time. The higher the frequency, the closer the waves are together and the greater the energy carried by the waves will be.

4. amplitude is a measure of the distance between a line through the middle of a wave and a crest or trough. The greater the force that produces a wave, the greater the amplitude of the wave and the greater the energy carried by the wave. In a transverse wave the higher the wave, the higher the amplitude.

6. Sounds with greater amplitude will be louder; light with greater amplitude will be brighter.

7. wavelength is a measure of the distance from the crest on one wave to the crest on the very next wave. Shorter wavelengths are influenced by the frequency. A higher frequency causes a shorter wavelength and greater energy.

8. speed is a measure of the distance a wave travels in an amount of time. The speed of a wave is determined by the type of wave and the nature of the medium. As a wave enters a different medium, the wave’s speed changes. Waves travel at different speeds in different media. All frequencies of electromagnetic waves travel at the same speed in empty space.

9. Wave speed equations https://www.youtube.com/watch?v=gbk6P5wJJRo https://www.youtube.com/watch?v=gbk6P5wJJRo The formula we are going to practice today is the wave speed equation: wave speed=wavelength*frequency

10. * A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave? f = 50 Hz 1 = 10 m v = ? v = *f = (10 m)* (50 Hz)= 500m/s

11. Pulse check 1. Turn to a clean sheet in your notes 2. Draw a huge transverse wave 3. Label the crest, trough, amplitude, and wavelength

12. Post-Test http://www.softschools.com/quizzes/science /waves/quiz343.htmlhttp://www.softschools.com/quizzes/science /waves/quiz343.html

13. Application Complete wave property lab with your group after watching review video. https://www.youtube.com/watch?v=RVyHkV 3wIyk