14. Which of the following quantities, when doubled, has the greatest effect on the amount of kinetic 16. For every energy? a. mass b. size c. speed d. weight 15. What force is always directed opposite to the motion of an object? a. Friction d. Tension b. Gravitational c. Magnetic there is an equal and opposite a. action, action b. reaction, action c. action, reaction d. reaction, reaction 17. Which phenomenon explains why sound is heard at longer distances at night than in day? a. echolocation b. reflection C. refraction d. reverberation 18. Nina sent an arrow beam of white light through a prism. As a result, she observed the light dispersing into a. four colors b. three colors c. five colors d. seven colors 19. If a green ball is higher from the ground than a yellow ball and both have the same mass, which ball has more potential energy? a. Green ball b. yellow ball c. both has the same PE d. both has the same KE 20. What force pulls an object back to the Earth? a. Applied b. Gravitational c. Magnetic d. Tension 21. Which of the following factors does not affect the amount of potential energy of an object? a. Gravity b. height c. mass d. speed 22. What Newton's law of motion requires the use of seat belt in cars? a. Law of Inertia b. Law of Interaction c. Law of Acceleration d. Law of Universal Gravitation 23. Which surface would be easiest for a bicycle to move? a. Sand b. Grass c. Muddy road d. Concrete road 24. A guava with a mass of 0.200 kg has a weight of a. 0.200 N b. 1.96 N c. 4.50 N d. 10.0 N 25. Rainbows are formed through I. dispersion II. reflection III. refraction a. I only b. I and II c. III only D. I, II and III 26. What happens to kinetic energy if mass is doubled? a. doubled b. the same c. tripled d. quadrupled 27. A stone hits the ground before a flat sheet of paper because a. it is less massive b. it is more massive c. the acceleration of gravity is greater on the stone d. there is more air resistance against the flat paper 28. What type of forces holds between two celestial bodies like the Sun and Earth? a. Applied b. Gravitational c. Magnetic d. Tension 29. What can prisms do? a. Change sunlight into a single color. Invert a light ray's frequency and wavelength.
