# Print

## 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

• Bring these devices into the lesson.

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.

### Question

1. What is the current in a 173 V circuit if the resistance 12.5 Ω?
2. What voltage is required to move 56.7 A through 3.3 Ω?
3. What color of visible light has the longest wavelength?
4. What is the difference between a series and parallel circuit?
5. What is the difference between a conductor and insulator?
6. If a blender is plugged into a 165 V outlet that supplies 6.5 A of current, what amount of power is used by the blender?
7. You serve a volleyball with a mass of 25 kg. The ball leaves your hand with a speed of 20 m/s. The ball has ____________ energy. Calculate it.
8. A cinder block is sitting on a platform 65 m high. It weighs 29 kg. The block has _____________ energy. Calculate it.
9. What is the law of conservation of energy?
10. What happens to the potential energy as you increase the height the object is being dropped at?
11. What happens to kinetic energy as the velocity of an object decreases?
12. What is the difference between kinetic and potential energy?
13. State Newton's first law of Motion in your own words.
14. State Newton's Second Law of Motion in your own words.
15. Which law of Newton’s Law of Motion is responsible for rocket ships flying in space?
16. State Newton’s third Law of motion in your own words.
17. Which law of Newton’s Law of Motion is responsible for the moon to continue to move around the earth?
18. What force is required to give a 100 kg object an acceleration of 10 m/s/s
19. List 5 simple machines.
20. Why is the work output always equal to or less than work input?
21. What is the Mechanical Advantage when a pulley systems lifts 2000 N with a single 250 N force being pulled?
22. If one climbs a height of 50 m in 2 hr, how much power did that person display?
23. Define Efficiency.
24. A 15-meter long ramp has a mechanical advantage of 7.5. What is the height of the ramp?
25. A machine uses an input force of 20 newtons to produce an output force of 120 newtons. What is the mechanical advantage of this machine?
26. If an object is 64.4 ml and 26.3 grams, what is the density?
27. Convert 675 inches to ft
28. Convert 1068 yards to miles
29. If a toy car travels 26 cm in 2.5 seconds, what is the speed?
30. Car “A” starts at a speed of 25 m/s and reaches a speed of 35 m/s in 3 seconds. Car “B” starts at a speed of 45 m/s and reaches a speed of 59 m/s in 4.5 seconds. Which car has a higher acceleration?
31. A car starts at a speed of 45 m/s and slows down to 34 m/s in 5 seconds. What is the car’s acceleration?

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