2. What is magnetism? Magnetisms is force of energy. What are magnets? Magnets is a thing made out of iron or steel and it can attract magnetic material made out of iron, steel, cobalt and nickel. What are temporary magnets? A temporary magnet is a magnet that can be demagnetized.
3. What are permanent magnets? A permanent magnet is a magnet that cannot be demagnetized. What are electromagnets? An electromagnet is a temporary magnet powered by electricity. What are superconductors? A superconductor is a material which loses its electrical resistance when cooled to very low temperature. Superconductors are used to make electromagnets.
4. Who discovered magnets? A soldier named Peter Pergrinus. Name four facts about magnets. a)Unlike poles attract b)Like poles repel c)An electromagnet is a temporary magnet. d)A permanent magnet is a magnet that cannot be demagnetized Name five other planets that have magnetic fields. Saturn, Jupiter, Moon , Sun and Mars.
5. Label a magnet Illustrate repel and attract Place two like poles facing each other ,it will repel. Place two unlike poles of a magnet facing each other, It will attract.
7. List 10 uses of magnets It help to power motor It helps to hold the door open It helps to keep our gate shut tightly It attracts iron, steel, nickel and cobalt things. It collects iron, steel, nickel and cobalt things out of places hard to reach. It fastens steel framing It cleans up metal shavings that have fallen. Scrapyard uses magnet to pick up cars It helps to close our fridge door tightly It is uses in speakers
8. How do magnets make life easier or better? It is used in modern equipment such as: Motor in cars for transportation Speaker for sound
