BASIC PRINCIPLES OF MAGNETISM basic principles of electricity and magnetism science grade 10 quarter 2

basic principles of electricity and magnetism science grade 10 quarter 2

1. Magnetism

2. A magnet -material that attracts iron or materials containing iron. -Has 2 poles.

3. Where to? Explain the basic principles of Magnetism.

4. Test Mag...1, 2! Testing for Evidence of Magnetism Objectives: Identify the forces (attraction/repulsion) between: a. two magets, and b. a magnet and magnetic/nonmagnetic materials. Distinguish a magnet (permanent or temporary) from a non - magnetic object.

5. Procedure: 2. This time, use only one bar magnet and explore its possible effect/s on six to ten different objects found inside the classroom. Record the observed effect/s.(Exclude record on objects with no observed interaction with the magnet.)

6. Magnets that are in good condition are strong enough to push or pull another magnet close enough to it.

7. Magnets, strong or weak, can be made to attract non-magnet objects that is made of or has parts that are magnetic in nature such as those made of iron, nickel, cobalt or its alloys.

8. Opposites Attract Field lines that curve toward each other show attraction. TOP LEFT ON NOTES BOTTOM ON NOTES

9. Likes Repel Field lines that curve away from each other show repulsion. TOP RIGHT ON NOTES

10. Both poles of the magnet can attract non-magnet objects that have materials or parts that are magnetic in nature.

11. Only magnets can repel other magnets and already magnetized objects. But non-magnetized objects made of magnetic materials can only be attracted by a magnet.

12. Activity 3 Induced Magnetism Objectives: • Induce magnetism in a magnetic material. • Infer the polarity of the magnetized object.

13. Procedure: 1. Use the bar magnet and nails to find answers to the following questions.

14. What happens if you bring two iron nails close to (or touching) each other?

15. If you bring a bar magnet close to (or touching) the first iron nail,can the first iron nail attract and lift a second nail? A third one?

16. What happens if vary/change the distance between the magnet and the nail/s?

17. If the north pole of the bar magnet suspends the first nail by attraction, what is then the nails’s polarity of induced magnetism in the indicated regions? Why?

18. SUM IT UP CHALLENGE!