QR Challenge: Force

Created using the ClassTools QR Treasure Hunt Generator

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

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

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. actual mechanical advantage	___________ is what a machine actually does
2. compound machine	A ________________ is a combination of multiple simple machines
3. circuit	A path or trip around something
4. electrical current	A form of energy that is carried through wires and is used to operate machines, lights, etc
5. electromagnetic wave	Waves that can transfer electric and magnetic energy through the vacuum of space
6. energy	A usable power that comes from heat, electricity, etc
7. fossil fuel	A fuel (as coal, oil, or natural gas) formed in the earth from plant or animal remains
8. friction	The force that one surface exerts on another when the two surfaces rub against each other
9. fulcrum	The fixed point around which a lever pivots
10. generator	A machine that transfers energy to create electricity
11. gravitational force	The force of attraction between all masses in the universe
12. green energy	Energy that comes from the use of natural renewable resources
13. inclined plane	A simple machine that is a flat, sloped surface
14. inertia	The tendency of an object to resist any change in its motion
15. inversely proportional	A relationship where a number either increases as another decreases or decreases as another increases; the opposite of directly proportional
16. kinetic energy	Energy that a body possesses by virtue of being in motion
17. lever	A simple machine that consists of a rigid bar that pivots about a fixed point
18. machine	A device that changes the amount of force exerted, the distance over which a force is exerted, or the direction in which force is exerted
19. mechanical advantage	The ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine
20. mechanical energy	The sum of potential energy and kinetic energy, it is the energy associated with the motion and position of an object
21. motion	The state in which one object’s distance from another is changing
22. applied force	A force that is applied to an object by a person or another object
23. chemical reaction	A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction
24. constant speed	Is the rate of speed without any acceleration or regression and it is also not changing
25. electrical current	A flow of electric charge
26. Newton’s Laws	A set of laws that define force and motion
27. potential energy	The stored motion of an object, it’s ability to become active
28. pulley	A simple machine that consists of a grooved wheel with a rope or cable wrapped around it
29. simple machine	Any of the basic mechanical devices for applying a force
30. proportional	Corresponding in size or amount to something else
31. thermal energy	Type of energy that is generated and measured by any kind of heat
32. unbalanced force	The force of one object onto another, resulting in the first object’s motion
33. velocity	The speed of something in a given direction
34. wheel and axle	A simple machine that consists of two attached circular or cylindrical objects that rotate about a common axis, each one with a different radius
35. work	Force exerted on an object that causes it to move

 

---