1. Colegio San Patricio <br />Physics 8th Grade Review<br />Remember to study vocabulary of every section.<br />1. Who was Galileo Galilei?<br />Free Fall<br />2. An object is dropped straight down from a high cliff. What is its velocity after 6 seconds of free fall?<br />FORMULA PROCESS WITH UNITS CANCELLATION ANSWER<br />3. An object is thrown straight downward from a high cliff. If its speed at the time it is released is 15m/s, what is its velocity after 3 seconds of free fall?<br /> FORMULA PROCESS WITH UNITS CANCELLATION ANSWER<br />4. If an object falls from a high cliff, how long will it take before it reaches a speed of 40m/s?<br />FORMULA PROCESS WITH UNITS CANCELLATION ANSWER<br />Waves<br />5. Label the parts of the wave.<br />Problem Solving<br />6. A wave has a wavelength of 4m and a frequency of 8 wavelengths/sec. What is the speed of the wave?<br />FORMULA PROCESS WITH UNITS CANCELLATION ANSWER<br />7. An ocean wave has a wavelength of 6m and a speed of 30m/s. What is the frequency of the wave?<br />FORMULA PROCESS WITH UNITS CANCELLATION ANSWER<br />8. A wave has a frequency of 9 wavelengths/sec and a speed of 45m/s. What is its wavelength?<br />FORMULA PROCESS WITH UNITS CANCELLATION ANSWER<br />9.Sketch the 3 wave behaviors and the wave interactions.<br />Reflection Refraction Diffraction<br />Constructive Interference Destructive Interference<br />Sound<br />10. Describe the 3 steps for a sound wave to be produced.<br />11. Describe the parts of the ear involved for a sound wave to be detected.<br />12. Mention the different kind of materials in which sound wave travels in order from<br />fastest to slowest speed.<br />13. Describe how the temperature affects the speed of a sound wave.<br />14. Give examples of high pitch and low pitch sounds.<br />15. Give examples of high amplitude and low amplitude sounds.<br />16. Explain how the intensity of a sound can be controlled.<br />17. Explain the Doppler effect using the image.<br /> INCLUDEPICTURE quot;
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MERGEFORMATINET INCLUDEPICTURE quot;
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MERGEFORMATINET <br />18. Describe the differences between human and animal hearing range.<br />19. Draw different uses of sound.<br />