A. Multiple Choice 1. It is a push or pull that starts, stops or changes the direction of an object. A. Motion B. Energy C. Force D. Food 2. Which kind of force opposes motion between two surfaces sticking or touching together? A. Gravity B. Electric C. Magnetic D. Friction 3. Which has the greatest friction among these kinds of surfaces? A Polished floor B. Sandy floor C. Wet floor D. Tiled floor 4. Friction is a force that opposes motion. It acts in the direction of a moving object. A opposite B. same C. upward D. downward 5. Which activities are suited to be performed in a smooth surface or floor? A Playing soccer football and baseball C. Playing tug of war and hide and seek B. Ballet dancing and roller skating D. Applying lubricant on it like oil or wax 6. Which of the following statements best describes friction? A. It is a force that occurs when surfaces touch each other. B. It is a force that occurs in smooth surfaces. C. It is a force that occurs between solids and liquids. D. It is a force that occurs only on rough surfaces. 7. Which of the following equals the force exerted by the earth on you? A. Your mass B. your weight c. half your mass d. half your weight 8. Where is the gravitational force directed when you are holding a glass? A. Upward B. downward C. into the glass D. remains the same 9. Which of the following shows the presence of friction? A. Cars continuously roll down hills C. People stay in place as they move B. Things fall off on smooth surfaces D. Cars stop when the driver steps on the brakes 10. Which is true about mass and gravity? A. The lesser the mass of the object, the greater the pull of gravity B. The greater the mass of the object, the lesser the pull of gravity C. The greater the mass of the object, the greater the pull of gravity D. Non of these, gravity and mass are not related​