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# waves (version deux)

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• ### waves (version deux)

1. 1. Waves Diana Liu and Dan Froehlich
2. 2. Transverse Waves <ul><li>displacement perpendicular to wave motion </li></ul>
3. 3. Longitudinal Waves <ul><li>displacement parallel to wave motion </li></ul>
4. 4. Parts of a wave trough crest
5. 5. Constructive Interference <ul><li>When crests and troughs combine, amplitude increases=bigger waves </li></ul>
6. 6. Destructive Interference When crests and troughs meet, they cancel each other out=smaller waves
7. 7. Speed of a Wave <ul><li>Velocity -speed at which the wave is traveling </li></ul><ul><li>Frequency -number of times a wave passes a point per second </li></ul><ul><li>Wavelength -Length of wave from crest to crest or trough to trough </li></ul>Velocity = Frequency x Wavelength
8. 11. Tsunamis are caused by: <ul><li>1-Earthquakes </li></ul>3-LANDSLIDES 2-VOLCANOES
9. 12. REVIEW
10. 13. <ul><li>When the particles of the medium are displaced parallel to the direction of the propagation of the wave, it is called the ___________. </li></ul><ul><li>A-Water wave </li></ul><ul><li>B-Torsal wave </li></ul><ul><li>C-Transverse wave </li></ul><ul><li>D-Longitudinal wave </li></ul><ul><li>E-Ultrasonic wave </li></ul>
11. 14. <ul><li>Which of the following is the definition of amplitude? </li></ul><ul><li>A-The maximum displacement from the equilibrium position. </li></ul><ul><li>B-The total distance traveled by the wave in one full cycle. </li></ul><ul><li>C-The energy reflected by a fixed medium. The lowest frequency that produces a standing wave. </li></ul><ul><li>D-A rotating wheel. </li></ul>
12. 15. <ul><li>What is a transverse wave? </li></ul><ul><li>A-The rate with which the amplitude of the wave pulsates. </li></ul><ul><li>B-The movement of particles perpendicular to the direction of travel </li></ul><ul><li>C-A wave of alternating lower and higher pressure. </li></ul><ul><li>D-A fraction of the original sound intensity absorbed by the material at some given frequency. The particles of the medium that are displaced perpendicular to the direction of propagation. </li></ul>http://library.thinkquest.org/C005705/English/Waves/quiz.htm
13. 16. http://www.antonine-education.co.uk/Physics_A2/Module_4/Topic_4/Quiz_A2_4_4.htm <ul><li>In a wave, the distance between the crest and a crest is: </li></ul><ul><li>  </li></ul><ul><li>A- The equilibrium position </li></ul><ul><li>   B-The amplitude </li></ul><ul><li>   C-The double amplitude </li></ul><ul><li>   D-The wavelength </li></ul>
14. 17. <ul><li>The frequency of a wave is: </li></ul><ul><li>   </li></ul><ul><li>A-The power per unit area of a wave. </li></ul><ul><li> B-The distance between two successive crests </li></ul><ul><li> C-How long a wave takes to pass a point. </li></ul><ul><li>D-The number of waves per second </li></ul>
15. 18. Label the parts of the wave A B C C D- amplitude A- crest B- trough C- wavelength
16. 19. Spilling Breakers are caused by <ul><li>A-Steep slopes </li></ul><ul><li>B-Gentle slopes </li></ul><ul><li>C-Rough weather </li></ul><ul><li>D-Moderate slopes </li></ul>