Topic: MAGNETIC & NON-MAGNETIC SUBSTANCES PRIMARY 4 DONE BY: Rina Zalinah Razalli 04B2337 SULTAN HAJI HASSANAL BOLKIAH INSTITUTE OF EDUCATION UNIVERSITI.

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Presentation transcript:

Topic: MAGNETIC & NON-MAGNETIC SUBSTANCES PRIMARY 4 DONE BY: Rina Zalinah Razalli 04B2337 SULTAN HAJI HASSANAL BOLKIAH INSTITUTE OF EDUCATION UNIVERSITI BRUNEI DARUSSALAM

Figure 1

Questions Study the diagrams in Figure 1 carefully. a.Which object is certainly a magnet? b.Which object can either be a magnet or is made of a magnetic substance? c.Which object is made of a non-magnetic substance? d.Name one example that can represents Object X. e.Name one example that can represents Object Y.

Possible Solutions / Answers Q. (a) Object Y Explanation: The fact about a magnet is that it can repel another magnet. It also can attract another magnet. It is mainly because a magnet has poles (North pole and South Pole). Why can’t Object X be the possible answer? Please refer to Explanation (c).

Object X. Explanation: The fact about a magnetic substance is that it can only attract to a magnet, but it cannot repel another magnet. This is because magnetic substance do not have any pole. The fact about a magnetic substance is that it can only attract to a magnet, but it cannot repel another magnet. This is because magnetic substance do not have any pole. Possible Solutions / Answers Q. (b)

Object Z Explanation: The fact about non-magnetic substance is that it has no reaction at all when brought near to a magnet. It is because only magnetic substance is attracted to a magnet. Possible Solutions / Answers Q. (c)

Horse-shoe magnet U-shaped magnet Bar magnet Rod magnet Ring magnet Needle (magnetic substance) Pin (magnetic substance) Paper clip (magnetic substance) Nail (magnetic substance) Either one from the above lists can represent Object X, where the first five are examples of magnets and the last four are examples of magnetic-substances. Possible Solutions / Answers Q. (d)

-Ring magnet -Bar magnet -Rod magnet -Horse-shoe magnet -U-shaped magnet Either one from the above list can represent Object Y, where all of the above list are examples of magnet. Possible Solutions / Answers Q. (e)