NAME: ________________________________________________ GRADE & SECTION: _______________ DATE: ________________ ACTIVITY 2.1.2 TEST… MAG… 1 2 (Testing for Evidence of Magnetism) I. Objectives: •Identify the forces (attraction/repulsion) between: a. two magnets, and b. a magnet and magnetic/nonmagnetic materials. •Distinguish a magnet (permanent or temporary) from a non - magnet object. II. Materials: • pair of 3”- 6” bar magnets •6-10 objects made of different materials from inside the room •activity sheet and pen Safety Precautions: • Handle magnets with care so as not to drop those. These might break, chip off, and weaken upon impact. • Keep magnets away from computer units/screens, memory storage drives and disks, magnetic tapes, mechanical watches, and the like. III. Procedure: 1. Use a bar magnet and explore the possible effect/s it can have on the other hanged magnet when made to interact. On your activity sheet, record the observed force effect/s. Answer also the guide questions. Table 4. Interaction between two permanent bar magnets INTERACTION OBSERVED EFFECT ( attracted or repeled) The north pole of a magnet is placed near the north pole of the other magnet The north pole of a magnet is placed near the south of the other magnet The south pole of a magnet is placed near the south of the other magnet The south pole of a magnet is placed near the north of the other magnet Guide question: 1. Which interaction made a magnet attract another magnet? 2. Which interaction made a magnet repel another magnet? 2. This time, use only one bar magnet and explore its possible effect/s on ten different objects found inside the classroom. Record the observed effect/s on a table similar to Table 5. (Exclude record on objects with no observed interaction with the magnet.) Table 5. Interaction of a bar magnet with other objects Objects that interacted with the magnet Observed effect/s (attracted or repeled) 1 2 3 4 5 6 7 8 9 10 3. In general, what conditions with observable effects make magnets interact with non-magnet materials? 4. What type/s of force can a magnet exert on another magnet? 5. What type/s of force can a magnet exert on non-magnet objects? 6. How will you distinguish magnets from non-magnet magnetic materials?