34. What energy is stored in a dry coll? A. chemical energy B. light energy c. nuclear energy D. mechanical energ

35. Which device uses chemical energy in portable radios to produced sound? A. dry cell B. generator C. flashlight D. rootor

36. Which of the following energy transformations happens in hydroelectric power planta? A. mechanical energy > electricity C. gravitational PE > kinetic energy > electric B. kinetic energy > gravitational PE > electricity D. electricity kinetic energy potential energy

37. A can opener is a combination of which simple machines? A, a lever and a wedge C, a lever and an inclined plane B. a wedge and a acrew D. An inclined plane and a Wedge

38. Which of the following activities that pulley is needed to do the task? A. open a door C. cut a piece of wood B. lift an object to a truck D. raising a flag during a flag ceremony

39. Your mother is asking you hand over a knife. Which of the following demonstrat the proper way of handling sharp objects like life? A. Position the pointed edge downward. B. Position the Pointed edge upward. C. Pass the knife by throwing it. D. Place it a tool box.

40. Why is more important to avoid slippery spots on ramp than on a level pavement? A. Just hold on to the handrails and you'll be alright. B. Slipping on a ramp will hurt more than slipping on a level pavement. C. No such slippery spots on ramps because water runs down, while it forms puddles on a level pavement. D. You'll need friction just to stand upright on a ramp, while on a level pavement, you can stand even if its slippery. pasagot pls​