REVIEWER GRADE FIVE - THIRD QUARTER.pptx

REVIEWER GRADE FIVE - THIRD QUARTER

1. REVIEW 5

2. When is a shadow formed? when light is blocked when there is no light when light is absorbed when light passed an object

3. When does reflection happen? When light curves in a circular path When light bounces off a shiny, smooth surface When light spreads out as it passes through a gap When light bends as it moves through different materials

4. What happens when light strikes a transparent surface, such as window glass or plastic wrap? The light will bend. The light will be absorbed. The light will bounce back. The light will be transmitted.

5. What happens to light when it strikes translucent materials? The light is blocked. The light is absorbed. The light passes through. The light is transmitted and absorbed.

6. What happens when opaque materials absorb light? The material heats up. The material transmits light. The material scatters the light. The material bounces off the light.

7. It is the type of electricity that flows or in motion. current electricity solar electricity static electricity wind electricity

8. What do you call the path that the electricity flows from the battery to the light bulb and back to the battery? circuit components switch wires

9. What do you call the device used to turn on and off an electrical appliance? dry cell light bulb switch wires

10. If Hazel doesn’t want to touch the bare copper wires when using her ‘porta-bulb’, what device should she add to her project? knife switch pen knife switchblade knife switchboard

11. What will happen if the battery is in place, the switch is on, but the bulb is not in place? It will not produce light. The bulb will shine brightly. It will make the bulb dimmer. It will turn the light on and off.

12. What will happen when more batteries are added to the circuit? The bulb will light. The bulb will not light. The bulb will light brighter. The bulb will become dimmer.

13. Which among the following is the correct way of putting together the components needed for an electric circuit? Put connections on the source and the dry cells. Connect the source to the light bulb using wires. Put connections to the switch and the source and the dry cells back to the source. Connect the switch to the load and the load to the light bulb and the light bulb back to the load using wires.

14. In a parallel circuit, why is it that when a bulb burns out or is loose, the other bulbs still light up? because the electric current does not flow because electric current can be stopped from flowing because electric current is allowed to pass through a single path because each connection in the circuit is independent from the others

15. In a series circuit, if one load is broken, what will happen to the other loads? The other loads will remain working. The other sources will remain working. All of the other loads stop working as well. All of the other sources stop working as well.

16. What will happen to the voltage across the paths in a parallel circuit if more independent bulbs are added and the number of dry cells or source is the same? the voltage will increase the voltage will decrease the voltage will fluctuate the voltage will remain the same

17. What is most likely to happen if the switch is on and the battery is removed from the circuit? The bulb will shine brightly. The electricity will flow properly. Electric current will continuously flow. The electricity will not flow, and the bulb will not light.

18. Below are advantages of the parallel circuit, except one. Which is it? Individual devices can be controlled. Parallel circuit requires many wiring connections. When a bulb burns out, other bulbs continue to glow. Two or more pathways allow electric current to pass through.

19. Why is a parallel circuit more cost efficient? I. Two bulbs in a simple parallel circuit enjoy the full electrical strength of a battery. II. The bulbs in a parallel circuit will be brighter than those in a series circuit. III. It requires less wire and is easier to assemble. IV. If one loop is disconnected, the others remain powered. I, II, IV II, III, IV I, III, IV I, II, III, IV

20. Which among the following statements describe a parallel circuit? One advantage of a series circuit is that it is simple in design and easy to build. When one bulb burned out, or is removed or is loosened, the other bulbs will still light up. The removed or broken light bulb breaks or opens the pathway of electrons, so electricity cannot flow through. One disadvantage is that when one bulb is broken or loosened, then the rest of the bulbs stop functioning as the breaking or loosening of even one bulb opens the circuit or breaks the flow of electrons.

21. A magnet that works only when there is a flow of electricity. Electromagnet Bar Magnet Horseshoe Magnet Magnetite

22. When does an electromagnet operate? When there is a nail. When there is a wire. When there is a dry cell. When there is a flow of electricity.

23. What happens when a part of an electromagnet is disconnected? It loses its magnetism. Electricity continues to flow through it. The electromagnet becomes a permanent magnet. There is an increase in the number of materials attracted.

24. Which of the following electromagnets can attract the greatest number of thumbtacks? one with 10 coils one with 20 coils one with 25 coils one with 30 coils

25. What will happen when electricity stops flowing through a coil of wire? The core will burn. Nothing will happen to the core. The core will stop attracting metal. The core will continue attracting metal.

26. Which can increase the strength of an electromagnet? increasing the number of batteries or coils around the nail decreasing the number of batteries or coin around the nail increasing the number of batteries and coils around the nail decreasing the number of batteries and coils around the nail

27. Which does NOT tell about an electromagnet? The more batteries, the stronger it is. The bigger the core, the stronger it is. The smaller number of batteries, the stronger it is. The more coils of wire in the core, the stronger it is.

28. Which of the following is the basic unit of distance? feet inch meter yard

29. It is the change of an object’s position over the change of time. location motion position speed

30. It serves as the basis for which the movement of an object can be related to. distance motion reference point speed

31. What refers to the measure on how fast an object move? acceleration force speed velocity

32. What instrument is used to measure speed? barometer displacement speedometer thermometer

33. Which of the following is the formula for determining distance? d= v x t d= s x t d= s/t d= v/t

34. What refers to the motion of an object moving in a straight line? circular motion periodic motion rectilinear motion rotational motion

35. What is the movement of an object in a circular motion on its axis? circular motion periodic motion rectilinear motion rotational motion

36. Which of the following demonstrates motion? A boy jogging in place. A dog barking at the garage. A girl running towards his father. A boy running on a treadmill device.

37. A car traveled 30 kilometers for 2 hours, what is its speed? 15km/h 28km/h 30km/h 60km/h

38. Why do we need measuring device to measure length or distance? To be familiar with the use of each tools To be aware of the speed when travelling To have an accurate data of the object or place To have experience using tools like ruler, meter stick, tape measure, etc.

39. How can a biker travel a great distance in a specified time? Pedal faster to increase the speed of the bike Pedal slowly to decrease the speed of the bike Increase the distance it will cover in the same time allotment Pedal faster to increase the distance it will take in a specified time.

40. A jeepney travels 120 kilometers in 3 hours. What is the average speed? 40 kph 43 kph 60 kph 120 kph

41. If the ball moves 8 meters in a speed of 2 m/s, how many seconds does it take to reach the goal post? 1 second 2 seconds 3 seconds 4 seconds

42. Richard kicks the ball at a speed of 3 m/sec in 3 seconds, how far will the ball reach? 1 meter 3 meters 6 meters 9 meters

43. What do you call the flow of electrons from one point to another? electricity heat gravity thermal

44. Why are cooking pans are made of metals? they are insulators they are non-metals they are conductors of heat they are conductors of electrical energy

45. Which of the following consists of objects that are good conductors of heat? gold, pencil, tape steel, paper towel, paper aluminum cup, wood, cloth iron wire, thumb tacks, steel ruler

46. Why do copper wires have to be covered with plastic tubing? people will panic people get less energy people get electric shock people will not get electric shock

47. Why are cooking utensils made up of metal but the handles are made of plastic? Metal is hard while plastic is soft. Metal is expensive, but plastic is cheaper. Metal is not brittle while plastic is brittle. Metal is a good conductor of heat while plastic is a poor conductor of heat.

48. What is the difference between a conductor and an insulator? An insulator is durable, while a conductor is not. A conductor is durable, while an insulator is not. An insulator allows heat to flow through it easily while a conductor does not. A conductor allows heat to flow through it easily while an insulator does not.

49. All the following statements are correct, EXCEPT one. Which one is it? Metals are non-ductile while non-metals are ductile. Metals are opaque while non-metals are transparent. Metals are lustrous while non-metals are not lustrous. Metals are good conductors of heat and electricity while non-metals are poor conductors of heat and electricity.

50. What material are used in the tinted glass of cars? absorbent opaque translucent transparent

51. Which of the following is true about visible light? Visible light is not real. Visible light can’t be seen. Visible light causes skin cancer. Visible light can never harm you.