Q3-W6-SCIENCE Grade 5 Science About Electromagnetic

Electromagnetic Power Point presentation

1. SCIENCE 5 QUARTER 3 WEEK 6 DAY 1 ELECTROMAGNET

2. Review : Write the letter of the correct schematic symbol to its function.  1.Source of electricity. 2. Controls the flow of electricity from the source ( On/OFF). 3. The pathway of electricity from the source to the load. 4. A device that uses electricity from the source.

3. Observe the picture below: What can you say about the picture?

4. Examine the picture below: What are the different parts of the simple electromagnet?

5. All magnets belong to a group of metals called the ferromagnetic metals . These are metals such as nickel and iron. Each of these metals have the special property of being able to be magnetized uniformly.

6. It can attract objects such as pins, coins, and other materials made up of iron and steel. A nail is not a magnet, but it can be turned into one. This is done by coiling a wire around it and then letting electricity flow through it. Doing this turns the nail into an electromagnet.

7. An electromagnet attracts like a real magnet. It can attract materials made of metals like pins and thumbtacks. The iron nail acts as magnet while electricity from the battery is flowing through the coil of wire. When electricity stops flowing through the coil to the nail it can no longer attract the pin and thumbtacks. Electromagnets are temporary magnets .

8. The Parts of an Electromagnet A basic electromagnet has three main parts: an iron core, insulated wire and a power sources. 1. Iron core . Its purpose is to concentrate the magnetic flux produced by the current in the area outside the wires.

9. 2. Wire/ Insulated wire . The wire serves as the passage of the electric current creating a magnetic field. The number of turns of wire represents the power of the electromagnet. The cable and wires need to be insulated as it prevents the current from coming into contact with other conductors. It preserves the wire material against environmental threats and resists electrical leakage.

10. 3. Power source. It serves as the source of electricity that flows to the wire to create a magnetic field. The amount of current also affects the strength of the electromagnet.

11. Directions: Fill in the boxes with the materials that make up an electromagnet. Choose your answer form the words inside the box.

12. What materials that uses electromagnets?

13. Using electromagnets, you can create all sorts of things, including motors, solenoids, hard disks and tape drives, speakers, and many others. Electromagnets have many uses. 1. It is used to transmit signals, as in the telegraph, telephone, radio, and television.

14. 2. It is also used for industrial purposes, such as in motors, generators, and transformers. 3. The electromagnet in a crane is used to lift heavy objects like metals, steel bars, scrap iron, and cars. 4. Electromagnets are used in bells, buzzers, chimes, circuit breakers, and other electrical appliances in our homes. 5. Electromagnets run electric toys.

15. REMEMBER THESE:    An electromagnet attracts like a real magnet but it is a temporary magnet.  The iron nail acts as magnet while electricity from the battery is flowing through the coil of wire.  When electricity stops flowing through the coil to the nail it can no longer attract the pin and thumbtacks.

16.  An electromagnet can be made stronger by using more coils of wire.  The number of battery or dry cell also affects the strength of an electromagnet.  Electromagnets are used in our home appliances and gadgets.

17. Directions: Write TRUE if the statement describes an electromagnet and FALSE if not __________1. Electromagnets are temporary magnets. ___________2. Electromagnet attracts the pins and thumbtacks when electricity STOPS flowing from the battery through the coil to the nail.

18. ___________3. Electromagnet is made of battery, coiled wire and nail. ___________4. Electromagnet can be made stronger by using more coils of wire. ___________5. The number of dry cell or battery CANNOT affect the strength of an electromagnet.

19. SCIENCE 5 QUARTER 3 WEEK 6 DAY 2 ELECTROMAGNET

20. REVIEW: Directions: Fill in the boxes with the materials that make up an electromagnet. Choose your answer form the words inside the box.

21. Look at the following materials and name them.

22. Can we make a simple electromagnet using the following?

23. Electricity can be used to produce magnet. This kind of magnet is called electromagnet. Iron nail with coiled wire will not produce magnet. The electricity from the battery used, flows through the coiled and made the metal and other magnetic materials to be attracted to the iron nail.

24. The electromagnet uses the magnetic effect of an electric current. A wire carrying current produces a magnetic field in the region around the wire.

25. Explore the link.   Online Simulation on Electromagnetism.   https://iwant2study.org/lookangejss/05electricitynmagnetism_21electromagnetism/ejss_model_EMStrengthpaperclips_numberofocoilandbattery/EMStrengthpaperclips_numberofocoilandbattery_Simulation.xhtml

26. Directions: Write TRUE if the statement is correct and FALSE if not. ________1. Electricity cannot be used to produce magnet. ________2. Battery is the source of electricity in the experiment performed.

27. ________3. Iron nail without coiled wire and battery can produce magnet. ________4. The use of battery attracts staple wires. ________5. Electricity can be used to produce magnets.

28. Which do you think is better, a permanent magnet or an electromagnet? Why?

29. Remember: Electricity can be used to produce magnet. This kind of magnet is called electromagnet. Iron nail with coiled wire will not produce magnet. The electricity from the battery used, flows through the coiled and made the metal and other magnetic materials to be attracted to the iron nail.

30. Directions: Read each question and answer it with Yes or No. Write your answer on the blank.   _______1. If we use of battery, coiled wire and iron nail, can we produce magnet? _______2. Can electricity be used to produce magnet?

31. _______3. Can iron nail produce magnets without the use of battery and coiled wire?   _______4. Is battery the source of electricity in the experiment?   _______5. Can magnet can be produced if we don’t use copper wire?

32. SCIENCE 5 QUARTER 3 WEEK 6 DAY 3 ELECTROMAGNET

33. Review: Directions: Read each question and answer it with Yes or No. Write your answer on the blank.   _______1. If we use of battery, coiled wire and iron nail, can we produce magnet? _______2. Can electricity be used to produce magnet?

34. _______3. Can iron nail produce magnets without the use of battery and coiled wire?   _______4. Is battery the source of electricity in the experiment?   _______5. Can magnet can be produced if we don’t use copper wire?

35. Observe the picture below: What can you say about the picture?

36. It is said that an electromagnet is temporary and is called an artificial magnet. It is a magnet that is only magnetic when an electric current is flowing through it. If the flow of the current is cut off, the property of magnetism stops.

37. An electromagnet is a type of magnet that produces its magnetic field with the help of an electric current. It attracts materials made of metal. In constructing a simple electromagnet, you need the following materials such as iron nail, copper wire and a dry cell or battery.

38. Observe the three pictures below label picture A , picture B and picture C. After carefully investigate the three pictures write your observation in the chart.

39. Guided questions 1. If you add coils to an electromagnet, does the magnet get stronger or weaker? Why? ___________________________________________________________________ 2. What happens if the current increases? ___________________________________________________________________

40. 1. Which of the following electromagnet will attract more pins? _________________________________________________________ 2. Why? _________________________________________________________

41. You were tasked to make a strong electromagnet by your teacher in Science.   What would you do to make your electromagnet set-up stronger?

42. Let’s Remember This   You can increase the strength of the magnet by increasing the number of coils. For example, if you double the number of coils, you double the strength of the inductive field.

43. DIRECTIONS : Write the T if the statement is correct and F if the statement is false. _________1. To increase the strength of an electromagnet, add more turns of the wire around an iron nail.   ________ 2. In making a simple electromagnet consider the number of turns around an iron nail to make the current flow strong.

44. _______ 3. The strength of electromagnet depends on the number of coils of wire wrap on it. ________ 4. The more loops of wire, the stronger the magnetic field created. ________ 5. An electromagnet can be made stronger by using less coils of wire.

45. Bring the following materials tomorrow: ½ meter wire 2 batteries Staple wires Iron nails Electric tape.

46. Bring the following materials tomorrow: ½ meter wire 2 batteries Staple wires Iron nails Electric tape.

47. SCIENCE 5 QUARTER 3 WEEK 6 DAY 4 ELECTROMAGNET

48. Review: DIRECTIONS : Write the T if the statement is correct and F if the statement is false. _________1. To increase the strength of an electromagnet, add more turns of the wire around an iron nail.   ________ 2. In making a simple electromagnet consider the number of turns around an iron nail to make the current flow strong.

49. _______ 3. The strength of electromagnet depends on the number of coils of wire wrap on it. ________ 4. The more loops of wire, the stronger the magnetic field created. ________ 5. An electromagnet can be made stronger by using less coils of wire.

50. Observe the picture below. What is in the picture?   Does it apply electromagnet?   Is it useful for the workers?

51. Using electromagnets in lifting heavy metals will make your work easily. Big construction company uses electromagnets to work fast.

52. How to make an electromagnet stronger?   An electromagnet can be made stronger by using more coils of wire. Each turn of wire adds more force to the electromagnet. The number of battery or dry cell also affects the strength of an electromagnet. More dry cells mean more electrons flowing in the electromagnet and, therefore, stronger magnetism is produced. The size of the iron core also matters. The greater the size of the iron core, the stronger magnetism has.

53. Activity Time!   Materials: Pieces of staple wires, Battery, iron nail, thin wire

54. Procedure: 1. Prepare the following materials. 2. Remove the insulator or cover of the wire. 3. Get an iron nail wrap it with wire and connect the battery at both ends of the wire. Wrap with an electric tape. 4. place it near the staple wires.

55. Answer the following questions:   What happen when you place the electromagnet near the staple wires?   Why?

56. List the different parts of a Simple Electromagnet. 1. 2. 3. 4.

57. Like an electromagnet , if you want to increase the strength add more coil around an iron nail. In your relationship to your family members and friends ,how can you make other people will trust you most?

58. What have you learned today?

59. Directions: Put a check ( /) mark in the picture that shows electricity can produce magnet and mark (X ) if not.

60. SCIENCE 5 QUARTER 3 WEEK 6 DAY 5 Catch-Up Friday