QR Challenge: Human Impacts, BGC Cycles, Populations and Succession Review

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.

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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!

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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.

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Questions / Answers (teacher reference)

Question	Answer
1. Which two biological processes are involved in the cycling of both oxygen and carbon?	photosynthesis and cellular respiration
2. What form of succession replaces an existing ecosystem after its climax community has been destroyed?	secondary
3. Which organism plays a vital role in the cycling of nitrogen?	bacteria
4. Which element does NOT cycle through the atmosphere?	phosphorus
5. What term refers to moving of organisms INTO an area?	immigration
6. What can occur when nitrogen-rich and phosphorus-rich run-off enters a body of water?	algal blooms
7. What chemical responsible for destroying the ozone layer, resulting in an increase in UV radiation?	CFCs
8. Which process occurs when bacteria or lightning coverts atmospheric nitrogen into a usable form (ammonia)?	nitrogen fixation
9. What two processes return water to the atmosphere?	transpiration and evaporation
10. What type of organism serves as a pioneer species?	lichens
11. What type of limiting-factor is a natural disaster (tornado, tsunami, etc.)?	density independent
12. What is the difference between biotic and abiotic factors?	Biotic-living, Abiotic-nonliving
13. Which stage of the water cycle occurs only in plants?	transpiration
14. What gas is released into the atmosphere during cellular respiration?	carbon dioxide
15. Which process returns nitrogen to the atmosphere?	denitrification
16. What type of population growth occurs when an organism has unlimited resources and no natural predators?	exponential growth
17. What process takes carbon dioxide out of the atmosphere?	photosynthesis
18. What term is used to describe the build-up of toxins in organisms higher up the food chain?	biomagnification
19. What process converts ammonia into nitrates?	nitrification
20. What term refers to the maximum number of individuals an environment can support for an extended period of time?	carrying capacity
21. What stage of the water cycle occurs between evaporation and precipitation?	condensation
22. What type of limiting-factor are competition and disease?	density dependent
23. What term refers to the characteristic plants and animals of a given area?	climax community
24. What gas is released into the atmosphere during photosynthesis?	oxygen
25. Burning leaves, the combustion of fossil fuels, and the loss of trees to deforestation, can all lead to an increase in greenhouse gases. What is caused by an increase in greenhouse gases?	global warming

 

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