QR Challenge: Biogeochemical Cycles
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. What type of factors are trees, mushrooms, bacteria, and birds? | biotic
|
2. What type of factors are water sunlight, soil, and precipitation? | abiotic
| 3. What is the conversion of water to the vapor state from the leaves of plants? | transpiration
| 4. What is the cooling of water in the atmosphere to produce clouds? | condensation
| 5. What is water that is absorbed into the soil and becomes groundwater? | infiltration
| 6. What is the build-up of pesticides or other pollutants in the fatty tissues of aquatic animals that increases as it moves through the food chain? |
| 7. What process removes carbon dioxide from the atmosphere? | photosynthesis
| 8. What process returns carbon dioxide to the atmosphere? | cellular respiration
| 9. What does CFCs in aerosol cans and refrigerants damage? | ozone layer
| 10. The build-up of what gas from burning of fossil fuels has led to global warming? | carbon dioxide
| 11. What gas is released by photosynthesis? | oxygen
| 12. What can result when nitrogen-rich fertilizers run-off into a body of water? | algal bloom
| 13. What process converts atmospheric nitrogen into ammonia? | nitrogen fixation
| 14. What process converts ammonia in the soil into nitrates? | nitrification
| 15. What process occurs during decomposition and converts nitrogen into ammonia? | ammonification
| 16. What process returns nitrogen in the soil back to the atmosphere? | denitrification
| 17. Phosphorous is needed to make which two compounds? | DNA and ATP
| 18. How is the phosphorous cycle different from the other cycles? | it is local, not global |
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_type_of_factors_are_trees,_mushrooms,_bacteria,_and_birds?
Question 1 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_type_of_factors_are_water_sunlight,_soil,_and_precipitation?
Question 2 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_the_conversion_of_water_to_the_vapor_state_from_the_leaves_of_plants?
Question 3 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_the_cooling_of_water_in_the_atmosphere_to_produce_clouds?
Question 4 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_water_that_is_absorbed_into_the_soil_and_becomes_groundwater?
Question 5 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_is_the_build-up_of_pesticides_or_other_pollutants_in_the_fatty_tissues_of_aquatic_animals_that_increases_as_it_moves_through_the_food_chain?
Question 6 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_process_removes_carbon_dioxide_from_the_atmosphere?
Question 7 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_process_returns_carbon_dioxide_to_the_atmosphere?
Question 8 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_does_CFCs_in_aerosol_cans_and_refrigerants_damage?
Question 9 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=The_build-up_of_what_gas_from_burning_of_fossil_fuels_has_led_to_global_warming?
Question 10 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_gas_is_released_by_photosynthesis?
Question 11 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_can_result_when_nitrogen-rich_fertilizers_run-off_into_a_body_of_water?
Question 12 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_process_converts_atmospheric_nitrogen_into_ammonia?
Question 13 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_process_converts_ammonia_in_the_soil_into_nitrates?
Question 14 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_process_occurs_during_decomposition_and_converts_nitrogen_into_ammonia?
Question 15 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=What_process_returns_nitrogen_in_the_soil_back_to_the_atmosphere?
Question 16 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=Phosphorous_is_needed_to_make_which_two_compounds?
Question 17 (of 18)
Biogeochemical Cycles : QR Challenge
https://www.classtools.net/QR/decode.php?text=How_is_the_phosphorous_cycle_different_from_the_other_cycles?
Question 18 (of 18)