Directions: Choose the letter of the correct answer d. mechanical a 1. Which of the following generates electricity? Bulb b car c. generator 2. What is the main component of power plant? a. motor b. turbine c. transformer d. solar panel 3. Which of the following makes use of electrical energy? a. flat iron c. florescent lamp b. electric stove d. A, B, C, are correct 4. Why is it necessary that energy from nature be converted into electricity? a. Electricity is safer to use than nature. b. Nature is the only source of energy. c. Electricity can be converted in one area only. d. Electricity can be stored, distributed and transmitted to far places. 5. Why is electrical energy very useful to us? a. It is cheap b. It is easy to attain c. It is economical d. It helps make cooking faster and easier 6. What form of energy operates LRT and MRT? a. Sound energy b. Electrical c. Solar energy d. Nuclear energy 7. How much force is needed in going up a less steep incline? d. more; longer a. less; longer b. less; shorter c. more; shorter 8. A screw is a special kind of what simple machine? a. lever b. wedge c. inclined plane d. wheel and axle 9. Will it be possible for a girl in a seesaw to balance herself with her father who weighs twice as much as herself? Why? a. Yes, she'll have to sit nearer the fulcrum than her father. b. Yes, her father will have to sit nearer the fulcrum than her. c. No, she needs to be as heavy as her father. d. No, she needs to be heavier than her father.
