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QR Challenge: Magnetism

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. A material that attracts iron and materials that contain iron is calledmagnet
2. The area of a magnet where the magnetic force is strongest is amagnetic poles
3. Like poles __________ each other while unlike poles ___________ each other.repel, attract
4. Bar magnets have two poles. What are they?north and south
5. What would you detect by using a compass, iron filings, and iron objects?magnetic field
6. Magnetism is a type of what?force
7. If magnet A can hold 3 steel paperclips and magnet B can hold 5 steel paperclips, which one is stronger?B
8. What does repel mean?magnets move away from each other
9. What object would not attract a magnet?wood
10. What object would attract a magnet?iron
11. Magnetic materials are made frommetal
12. The lines of a magnetic field go from:north pole
13. If two magnets were in this order: NS NS they would:attract
14. How to demagnetization?heating, hammering
15. Easy to magnetisesoft iron
16. Retain magnetism well, but difficult to magnetise in the first placehard steel
17. Lines close together indicate a ______ fieldstrong
18. A typical electromagnet is made from a coil of copper wire, is calledsolenoid
19. the greater the current, the ________ the strength of the fieldgreater
20. Electromagnets are also used in _____electric doorbells, loudspeakers, electric motors, ralays and transformers
21. 4. State two methods by which a piece of unmagnetised steel can be magnetizedstroked with a permanent magnet
22. Further from the wire they are further apart, showing that the field is________weaker
23. Reversing the current reverses the direction of the_________magnetic field
24. Generator have three things in commonA magnetic field, A coil of wire, Movement
25. When the coil and the magnetic field move relative to each other, a current flows in the coil if it is part of a complete circuit. This is known as aninduced current
26. The process of generating electricity from motion iselectromagnetic induction
27. A coil of wire and magnet moving relative to each other are needed to induce a voltage across the ends of wire. This is calleddynamo effect
28. three ways to increase the e.m.f induced in a coil or wireUse a stronger magnet, Move the wire or coil more quickly relative to the magnet, Use a coil with more turns of wire
29. Four ways of increasing the voltage generated by an A.C. GeneratorTurn the coil more rapidly, Use coil with more turns of wire, Use a coil with a bigger area, Use a stronger magnets
30. A device used to increase or decrease the voltage of an electricity supplytransformer
31. Parts of transformerA primary coil, A secondary coi, An iron core
32. The incoming voltage Vp is connected across this coilprimary coil
33. This provides the voltage Vs to the external circuitsecondary coil
34. This links the two coilsiron core
35. Increase the voltage, so there are more turns on the secondary than on the primarystep up
36. Reduces the voltage, so there are fewer turns on the secondary than on the primarystep down

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-material-that-attracts-iron-and-materials-that-contain-iron-is-called

Question 1 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-area-of-a-magnet-where-the-magnetic-force-is-strongest-is-a

Question 2 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Like-poles-__________-each-other-while-unlike-poles-___________-each-other.

Question 3 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Bar-magnets-have-two-poles.-What-are-they?

Question 4 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-would-you-detect-by-using-a-compass,-iron-filings,-and-iron-objects?

Question 5 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Magnetism-is-a-type-of-what?

Question 6 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=If-magnet-A-can-hold-3-steel-paperclips-and-magnet-B-can-hold-5-steel-paperclips,-which-one-is-stronger?

Question 7 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-does-repel-mean?

Question 8 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-object-would-not-attract-a-magnet?

Question 9 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-object-would-attract-a-magnet?

Question 10 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Magnetic-materials-are-made-from

Question 11 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-lines-of-a-magnetic-field-go-from:

Question 12 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=If-two-magnets-were-in-this-order:-NS-NS-they-would:

Question 13 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=How-to-demagnetization?

Question 14 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Easy-to-magnetise

Question 15 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Retain-magnetism-well,-but-difficult-to-magnetise-in-the-first-place

Question 16 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Lines-close-together-indicate-a-______-field

Question 17 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-typical-electromagnet-is-made-from-a-coil-of-copper-wire,-is-called

Question 18 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=the-greater-the-current,-the-________-the-strength-of-the-field

Question 19 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Electromagnets-are-also-used-in-_____

Question 20 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=4. State-two-methods-by-which-a-piece-of-unmagnetised-steel-can-be-magnetized

Question 21 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Further-from-the-wire-they-are-further-apart,-showing-that-the-field-is________

Question 22 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Reversing-the-current-reverses-the-direction-of-the_________

Question 23 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Generator-have-three-things-in-common

Question 24 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=When-the-coil-and-the-magnetic-field-move-relative-to-each-other,-a-current-flows-in-the-coil-if-it-is-part-of-a-complete-circuit.-This-is-known-as-an

Question 25 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-process-of-generating-electricity-from-motion-is

Question 26 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-coil-of-wire-and-magnet-moving-relative-to-each-other-are-needed-to-induce-a-voltage-across-the-ends-of-wire.-This-is-called

Question 27 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=three-ways-to-increase-the-e.m.f-induced-in-a-coil-or-wire

Question 28 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Four-ways-of-increasing-the-voltage-generated-by-an-A.C.--Generator

Question 29 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-device-used-to-increase-or-decrease-the-voltage-of-an-electricity-supply

Question 30 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Parts-of-transformer

Question 31 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=The-incoming-voltage-Vp--is-connected-across-this-coil

Question 32 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=This-provides-the-voltage-Vs-to-the-external-circuit

Question 33 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=This-links-the-two-coils

Question 34 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Increase-the-voltage,-so-there-are-more-turns-on-the-secondary-than-on-the-primary

Question 35 (of 36)

 


Magnetism: QR Challenge

https://www.classtools.net/QR/decode.php?text=Reduces-the-voltage,-so-there-are-fewer-turns-on-the-secondary-than-on-the-primary

Question 36 (of 36)