1. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 1 Magnets and Electromagnets

2. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 2 Q1. Name something that can separate iron filings from sand.

3. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 3 A1. A magnet

4. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 4 Q2. What do you call a magnet that can be turned on and off?

5. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 5 A2. An electromagnet

6. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 6 Q3. Which pole of a bar magnet points towards the earth's Arctic magnetic pole?

7. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 7 A3. The north pole

8. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 8 Q4. Which pole of a bar magnet points towards the earth's Antarctic magnetic pole?

9. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 9 A4. The south pole

10. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 10 Q5. What type of magnet remains indefinitely (for ever)?

11. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 11 A5. A permanent magnet

12. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 12 Q6. What do we call a wire wound into a spiral of loops?

13. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 13 A6. A coil

14. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 14 Q7. What do we call a coil of wire used as an electromagnet?

15. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 15 A7. A solenoid

16. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 16 Q8. Name a device that uses a magnet to show directions north and south.

17. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 17 A8. A compass

18. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 18 Q9. Name a sound generator that uses an electromagnet and a chime.

19. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 19 A9. An electric bell

20. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 20 Q10. What do we call an electrical switch operated by an electromagnet?

21. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 21 A10. A relay

22. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 22 Q11. Where do old cars and other waste metals ends up?

23. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 23 A11. A scrapyard

24. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 24 Q12. What word means to use again? (Think environmentally friendly)

25. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 25 A12. To recycle

26. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 26 Q13. What is the central part of a transformer or electromagnet, usually made of iron, called?

27. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 27 A13. The core

28. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 28 Q14. What fills the volume surrounding a magnet, often represented by a pattern of lines?

29. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 29 A14. A magnetic field

30. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 30 Q15. What do we call the movement of electric charge in a complete circuit?

31. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 31 A15. An electric current

32. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 32 Q16. What is the most common magnetic element?

33. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 33 A16. Iron

34. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 34 Q16. Name one of the magnetic data storage devices in a computer.

35. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 35 A16. The hard disk The floppy disk

36. © NTScience.co.uk 2005KS3 Unit 8j – Magnets and Electromagnets 36 Well Done! Now check your score