Ranao – Ranao, Ligao City
LONG TEST IN SCIENCE IV (PHYSICS)
MULTIPLE CHOICE. Read each item carefully and write the letter of the BEST answer in your answer sheets.
1. What is needed for sound to spread and travel? a. Force b. Medium c. Wires d. Sound wave 2. All of these are media in which sound waves can travel EXCEPT a. Solid b. Liquid c. Gas d. Vacuum 3. Why do people in upland areas speak louder than the normal voice compared to those residing in lowland areas? a. Air pressure above makes the sound waves travel slower so they speak louder than usual. b. Houses are far apart so they shout to communicate. c. The wind opposes the sound waves. d. None of the choices above. 4. At room temperature Oxygen, Copper and rain water are substances in which sound waves can travel. In which substance will sound waves travel fastest and slowest? a. Fastest in oxygen, slowest in copper c. Fastest in copper, slowest in oxygen b. Fastest in oxygen, slowest in rain water d. Fastest in copper, slowest in rain water 5. The speed of sound waves in air increases by about __________ for every degree rise in temperature. a. 0.6 m/s b. 6 m/s c. 0.6m/s2 d. 6 m/s2 6. What are the factors affecting sound propagation? a. Elasticity b. Density c. Temperature d. All of these 7. What will happen when a sound wave travels in a river exiting to the sea? a. The sound wave will travel faster as it travels in the saltwater. b. The sound wave will slow down as it travels from fresh water to salt water. c. The sound wave will remain the same. d. The sound wave will neither slow down nor speed up. 8. What part of the ear vibrates as sound waves enter the ear? a. Cochlea b. Ossicles c. Ear drum d. Organ of Corti 9. The ear detects sound waves. Trace the path taken by sound waves as it enters the ear. a. Outer ear – Ear canal –