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Name_________________________________________________________Block_____________________Waveswavemediummechanical wavetransverse wavelongitudinal wavecresttroughamplitudewavelengthfrequencyreflectionrefractiondiffractioninterferenceA. TRUE/FALSEIf the statement is true, write true on the line. If the statement is false, write false and then rewrite the italicized word or words to make the statement true.Example: Inertia is a push or a pull. false; force1. The bouncing back of a wave after it strikes a barrier is called refraction.2. When frequency increases, diffraction increases.3. A medium is any substance a wave moves through.4. Wavelength measures the distance a medium moves above or below its position at rest, indicating how much energy a wave carries.5. Sound waves are examples of longitudinal waves because the vibrations of air molecules move in the same direction as the movement of the wave.6. Diffraction is the tightening of waves though an opening or around the edge of an obstacle.7. The lowest point of a wave is the trough.8. A wave is a disturbance that moves matter from one place to another.9. In a transverse wave, the wave travels in the same direction as the disturbance.10. Frequency measures the number of waves passing a fi xed point in a certain amount of time.11. Mechanical waves are waves that transfer energy through empty space.12. Interference is the meeting and combining of waves.13. Crest refers to the resting point of a wave.14. Reflection is the bending of a wave as it enters a new medium at an angle other than 90 degrees.B. TYING WORDS TOGETHERUse each group of words in a sentence or two that help to explain waves.15. amplitude wavelength frequency16. wavelength crest trough17. interference amplitude crest18. wavelength longitudinal wave amplitude19. reflection refraction diffraction20. frequency crest wavelengthSAMPLE PROBLEMA swimmer dives into a pool and creates a wave with a wavelength of 0.5 meters and afrequency of 1.2 waves per second. What is the speed of the waves that the diver created?152400135890Calculate the speed of the following waves, using the information provided.21. wavelength = 0.2 m, frequency =5 (wave)/s22. wavelength = 15 m, frequency = 3 (wave)/s23. wavelength =2 m, frequency =0.6 (wave)/s24. wavelength = 1 cm, frequency = 5 (wave)/sSolve each problem. Express your answers in the correct units of measure.25. Along an oceanfront, 0.75 waves hit the sand every second and the wavelength is 10 meters. What is the speed of the waves?26. A rock falls off a cliff into a river below. This creates waves that are 1.5 m apart, occurring at a frequency of 0.5 waves every second. What is the speed of the waves created by the fallen rock?27. A motorboat passes through a bay creating some waves. You see that 2 waves hit the shore every second. Their wavelength is 0.5 m. What is the speed of the waves created by the boat? ................
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