Directions: Choose the letter of the best answer. @ 1. Which floor has the greatest friction? A. polished B. sandy C. tiled D. wet 2. The boat sailing on the sea slows down. What kind of friction is acting on it? A fluid 8. rolling C. sliding D. static Which of the following statements best describes friction? A. It is a force that occurs between solids. B. It is a force that occurs only on rough surface. C. It is a force that occurs between solids and liquids. D. It is a force that occurs when surfaces touch each other. How can you best reduce friction between the bottom or feet of furniture and the floor? A. by smoothing the floor. B. by keeping furniture on their place C. by applying lubricants like wax on the floor. . by putting wheels or rollers on the bottom or feet of furniture. 5. Which shows that friction is undesirable? - pushing furniture. 6. Which of the following statements is true? A. Friction makes an object slide. B. Force is needed to stop an object. C. Gravity pushes an object upward. D. An object in motion will remain in motion. 7. What can be done to increase the friction between two objects? A. make surface of one object smoother B. put water in between the two objects C. decrease the force pressing the two objects together D. increase the force pressing the two objects together 8. What is the type of friction that is important to walking? A. air friction C. sliding friction B. static friction D. fluid friction 9. You want to comb your hair smoothly, what oil product will you use? A. palm oil B. motor oil C. baby oil D. cooking oil 10. Matthew's car had engine trouble while going u in an inclined plane. As he repaired the engine, he put ra at the back wheels to stop the car from moving. What f prevent the car from moving?
