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# Sta4

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### Sta4

1. 1. STA. RITA DE CASCIA PAROCHIAL SCHOOL Quirino Ave., Baclaran Parañaque City GRADE SCHOOL LEVEL S.Y 2009-2010 THIRD MONTHLY TEST SCIENCE 5 Name __________________________________________Score ___________________ Grade & Section _________________________________Date ____________________ Teacher Ms. Arlyn D.C Tiglao ___________________________ Parent’s Signature I. Match the following terms with the correct definition by writing the letter on the blank. A B _____1. electric circuit a. a magnet that is created from electric current through a wire. _____2. circuit diagram b. a buildup of charge on an object _____3. electrical symbol c. a device that uses energy chemicalreactions too separate positive an negative charges. _____4. electric charge d. a shorthand method of drawing an electric circuit part. _____5. static energy e. a material that conducts electric current easily. _____6. battery f. a device that converts energy in motion to electricity. _____7. conductor g. property of matter responsible for electrical events; has two forms , positive and negative _____8. insulator h. a structure that provides paths through which electricity travels _____9. electromagnet i. a material that conducts electric current poorly _____10. generator j. a shorthand method of drawing the physical _____11. voltaic pale arrangement of a circuit. _____12. Lightning rod k. Michael Faraday _____13. First Largest Battery l. the representation of circuit current as the flow of _____14. amber and dry sap. positive charges. _____15. series circuit m. William Gilbert n. Thales o. Benjamin Franklin p. one path direction II. Multiple Choice: Read the following carefully. Encircle the correct answer. Please avoid erasure. 16. Which of the following particles move freely around the nucleus? a. protons b. electrons c. neutrons d. none of the above 17. A negatively charged material will _______ a positively charged material. a. attract b. repel c. neutralize d. rub 18. A negatively charged material will _______ a negatively charged material. a. attract b. repel c. neutralize d. rub 19. Which of the following is a conductor? a. glass b. wood c. human body d. plastic 20. Which of the following is not a part of a series connection? a. source b. wire c. bulb d. magnet 21. In which of the following is a parallel circuit best used? a. school project b. street lighting c. electrical home devices d. none of the above 22. For what purpose would you use a pulley? a. cut meat c. hold pieces of wood together b. open a can d. help guide the sail on a sailboat
2. 2. Page 2 – Science 5 23. Which of the following is a wedge? a. pencil sharpener b. seesaw c. fork d. meat grinder 24. What makes up the lever? a. a rod, a fulcrum, a load and an effort c. a ramp b. a pegged wheel and a crankshaft d. a fulcrum and a pitch 25. How many inclined planes does a chisel have? a. one b. two c. three d. four III .Identify what kind of simple machines is used in each item. Write LEVER, INCLINED PLANE, WEDGE, WHEEL AND AXLE, PULLEY, and SCREW on the blank provided. _____________26. playground side _____________31.teeth _____________27.floor mop _____________32.piano stool _____________28.steering wheels of motor vehicles _____________33.venetian blinds _____________29.grass shears _____________34.needle _____________30.modeling ramp _____________35.escalator IV. TRUE or FALSE: Read the following carefully. If the statement is true , write T. If it is false change the underlined word or words to make the statement true. _____________36.A pulley is an inclined plane that moves. _____________37.Work done by a machine is called work output. _____________ 38.A compound machine is a combination of two or more simple machines _____________39. To lift a load up with a fixed pulley , the rope is pulled up _____________40.In a third class level , the efforts in between the resistance and fulcrum. _____________41.The axle is the bigger wheel in a wheel and axle. _____________42.The screw gives an advantage in force but at the expense of distance _____________44.More force is needed to move an object up a shorter inclined plane. _____________45.Some machines can change the direction of force so that objects can be moved in different directions. _____________46.The work output is always greater than the work input. _____________47. A wheel and axle is modified lever _____________48. The wheelbarrow is first class lever. V. Compute the following carefully. (5pts each) A. Find out how much Mrs. Tiglao consumed electricity from the month of October to January. Month Previous Present Kwh Basic PPA Total Consumption Consumption Charges Oct 5011 5107 49. 50. 51. 52. Nov 5559 5011 53 54. 55. 56. Dec 5987 5559 57 58. 59. 60. Jan 5987 6113 61. 62. 63. 64. 65-66. Paulo lifted a 986 N box by applying 25 N of a force to a inclined plane, what is the M.A of the inclined plane? 67-68. How much force is done by a work of 8796 N that moves an object 25 m? 69- 70. Draw a parallel circuit and label its part.