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Summative Test # 2 in Science 6 Third Quarter 1.Choose the letter of the correct answer. Write your answer on the blank before the number. 1. Sound waves cannot travel in A. Air C. Water B. Steel D. Vacuum 2. Which of the following does not produce sound? A. Wind blowing C. falling leaf B. Alarm clock ringing D. a boy shouting 3. What makes a sound? A. force C. vibration B. instrument D. volume 4. This is a medium where sound travels slowly. A. air C. liquid B. gas D. solid 5. In each of our ears, we have a very sensitive membrane called the which also vibrates because of air. A. auricle C. ear canal B. cochlea D. eardrum 6. Where does sound travel fastest? C. metal A. air D. water B. empty space 7. It is an echo-sounding device or a technique that uses sound propagation to detect objects on or under the surface of the water. A. Sound Navigator and Range B. Sound Navigation and Range C. Sound Navigator and Ranging D. Sound Navigation and Ranging C. microphone 1 8. It is an example of transducer A. Pencil B. Water D. Guitar 9. It is the energy produced by vibrating objects A. Light energy C. Sound Energy B. Electrical Energy D. Mechanical Energy 10.It is the back and forth movement of an object A. Reflection C. Refraction B. Vibration D. Diffraction nswer.
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