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QR Challenge: PHun with Physics Review

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. An airplane travels 2000 kilometers in 4 hours, lands to refuel for 2 hours, then travel 3000 kilometers in 2 hours. What is the average speed of the plane over the entire trip in km/hr?625 km/hr
2. A car is driving north at 25 m/s. It slows to 10 m/s in 5 seconds. What is the acceleration of the car?-3 m/s2
3. A 5-kg box is traveling at a constant velocity of 2 m/s. What is the net force acting on the box?0N
4. A 60-kg man and a 40-kg woman accidentally collide on the street because they were texting on their cell phones. Who will experience a greater force from the collision?Neither(equal and opposite forces)
5. A satellite is orbiting the earth in a circular motion. What is the force that is causing the satellite to move in this manner? In what direction does this force act?Gravity, inward toward the core of the earth
6. What is the total mechanical energy of a 50-kg woman walking at 2 m/s on a 10-m tall building?5000J
7. A ball of an unknown mass falls from a 3.2-m tall building. What is the velocity of the ball before it hits the ground?8 m/s
8. What is conserved in inelastic collisions?momentum
9. A 1-kg ball collides with a 3-kg resting box with a speed of 4 m/s. The two objects stick together and move together. Find the resulting velocity after the collision.1 m/s
10. Temperature is a measure of what kind of energy?kinetic energy
11. Using the words "heat" and "transfer" explain why an ice cube feels cold in your hand.The heat from your hand transfers to the ice cube. You lose heat, so you feel cold
12. A proposed ideal heat engine would run with a high temperature reservoir at 800 kelvin and a low temperature reservoir at 300 kelvin. When the engine is running, it extracts 400 joules of energy from the hot reservoir and does 50 joules of work each minute. How much energy is expelled to the low temperature reservoir each minute?350J
13. An ice cream cone melts in the sun. Describe what happens to the ice cream's entropy and the surrounding's entropy.ice cream's entroypy increases, surrounding's entropy decreases
14. Which of the following is not an electromagnetic wave? X-ray, Sound wave, Radio Wave, Visible lightSound wave
15. Find the wavelength of a wave traveling at 5000 m/s with a frequency of 60 Hz.120m
16. Explain in 10 words or less why sound travels fastest through solidsparticles are closer together and vibrations travel faster
17. A person sitting in front of a lamp looks to be “glowing” around the edges. What interference phenomena explains this vision?diffraction (light bending around a barrier)
18. You want to build a light set-up for a party and you have 20 separate lightbulbs and one battery. If you wanted your party to be bright, what kind of circuit would you set up? If you wanted your party to have darker mood lights, what kind of circuit would you set up?bright=parallel, dim=series
19. What is the power dissipated across a 40-ohm resistor and a 10-V battery?2.5 watts
20. Name three ways to increase induced current with a magnet and a metal coil20. increase the number of coils, increase movement, and flip the magnet

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=An-airplane-travels-2000-kilometers-in-4-hours,-lands-to-refuel-for-2-hours,-then-travel-3000-kilometers-in-2-hours.-What-is-the-average-speed-of-the-plane-over-the-entire-trip-in-km/hr?

Question 1 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-car-is-driving-north-at-25-m/s.-It-slows-to-10-m/s-in-5-seconds.-What-is-the-acceleration-of-the-car?

Question 2 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-5-kg-box-is-traveling-at-a-constant-velocity-of-2-m/s.-What-is-the-net-force-acting-on-the-box?

Question 3 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-60-kg-man-and-a-40-kg-woman-accidentally-collide-on-the-street-because-they-were-texting-on-their-cell-phones.-Who-will-experience-a-greater-force-from-the-collision?

Question 4 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-satellite-is-orbiting-the-earth-in-a-circular-motion.-What-is-the-force-that-is-causing-the-satellite-to-move-in-this-manner?-In-what-direction-does-this-force-act?

Question 5 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-total-mechanical-energy-of-a-50-kg-woman-walking-at-2-m/s-on-a-10-m-tall-building?

Question 6 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-ball-of-an-unknown-mass-falls-from-a-3.2-m-tall-building.-What-is-the-velocity-of-the-ball-before-it-hits-the-ground?

Question 7 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-conserved-in-inelastic-collisions?

Question 8 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-1-kg-ball-collides-with-a-3-kg-resting-box-with-a-speed-of-4-m/s.-The-two-objects-stick-together-and-move-together.-Find-the-resulting-velocity-after-the-collision.

Question 9 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Temperature-is-a-measure-of-what-kind-of-energy?

Question 10 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Using-the-words-"heat"-and-"transfer"-explain-why-an-ice-cube-feels-cold-in-your-hand.

Question 11 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-proposed-ideal-heat-engine-would-run-with-a-high-temperature-reservoir-at-800-kelvin-and-a-low-temperature-reservoir-at-300-kelvin.-When-the-engine-is-running,-it-extracts-400-joules-of-energy-from-the-hot-reservoir-and-does-50-joules-of-work-each-minute.-How-much-energy-is-expelled-to-the-low-temperature-reservoir-each-minute?

Question 12 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=An-ice-cream-cone-melts-in-the-sun.-Describe-what-happens-to-the-ice-cream's-entropy-and-the-surrounding's-entropy.

Question 13 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which-of-the-following-is-not-an-electromagnetic-wave?-X-ray,-Sound-wave,-Radio-Wave,-Visible-light

Question 14 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find-the-wavelength-of-a-wave-traveling-at-5000-m/s-with-a-frequency-of-60-Hz.

Question 15 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Explain-in-10-words-or-less-why-sound-travels-fastest-through-solids

Question 16 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A-person-sitting-in-front-of-a-lamp-looks-to-be-“glowing”-around-the-edges.-What-interference-phenomena-explains-this-vision?

Question 17 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=You-want-to-build-a-light-set-up-for-a-party-and-you-have-20-separate-lightbulbs-and-one-battery.-If-you-wanted-your-party-to-be-bright,-what-kind-of-circuit-would-you-set-up?-If-you-wanted-your-party-to-have-darker-mood-lights,-what-kind-of-circuit-would-you-set-up?

Question 18 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-the-power-dissipated-across-a-40-ohm-resistor-and-a-10-V-battery?

Question 19 (of 20)

 


PHun with Physics Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=Name-three-ways-to-increase-induced-current-with-a-magnet-and-a-metal-coil

Question 20 (of 20)