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
4. Cut them out and place them around your class / school.
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!
4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.
Question | Answer |
| 1. What is one model that shows how energy passes from organism to organism is called? | Food chain | 2. Why is the amount of energy passed on from on organism to another decreasing?2 | Because most of the energy is either not absorbed in the first place or is consumed.2 | 3. Knowing that there is an energy loss while it energy flows between trophic levels, who has the most energy?3 | Producers3 | 4. Describe how energy flows through a food web.4 | Through the transfer of nutrients mainly4 | 5. How do producers obtain their energy?5 | From photosynthesis5 | 6. Where do consumers obtain their energy?6 | From eating other organisms that already have energy6 | 7. No organisms can utilize 100% of the energy present in the organic molecules of the food they eat. Then what percent of that energy is typically gained?7 | 10-20%7 | 8. State two reasons why not all of the energy present in an organism can be used by the organism in the next trophic level.8 | Not all of the organisms are being consumed, not all the parts of the organism can be absorbed and used in the body ex) owls, some organism die before being eaten by an organism from the next trophic level, heat loss due to cellular respiration at all trophic levels. Some of the organism is not eaten, Some parts are not digested and so are lost as feces, Some energy is lost as excretory materials, Some energy is lost as heat. 8 | 9. Why do animals lose more heat energy than plants?9 | because warm-blooded animals must use a lot of energy to maintain its body temperature.9 | 10. What organisms occupy the first trophic level and what is their energy source?10 | Photosynthetic organisms, sunlight.10 | 11. What do decomposers and detritus feeders such as soil organisms and the bottoms feeders in the river depend on for food?11 | Dead organic matter, rotten leaves.11 | 12. Once light energy has been absorbed by producers the chemical energy is available to the next trophic level. Energy is transferred from one organism to the next when three things are digested. Name the three things. 12 | Carbohydrates, lipids, and proteins.12 | 13. Explain why most food chains rarely have more than four trophic levels.13 | The proportion of energy transferred at each trophic level is small (less than 20%), so after four trophic levels there is insufficient energy to support a large enough breeding population.13 | 14. Who uses some of the lost energy?14 | detritivores and saprotrophs14 |
What is one model that shows how energy passes from organism to organism is called?&choe=UTF-8
Question 1 (of 14)
Why is the amount of energy passed on from on organism to another decreasing?2&choe=UTF-8
Question 2 (of 14)
Knowing that there is an energy loss while it energy flows between trophic levels, who has the most energy?3&choe=UTF-8
Question 3 (of 14)
Describe how energy flows through a food web.4&choe=UTF-8
Question 4 (of 14)
How do producers obtain their energy?5&choe=UTF-8
Question 5 (of 14)
Where do consumers obtain their energy?6&choe=UTF-8
Question 6 (of 14)
No organisms can utilize 100% of the energy present in the organic molecules of the food they eat. Then what percent of that energy is typically gained?7&choe=UTF-8
Question 7 (of 14)
State two reasons why not all of the energy present in an organism can be used by the organism in the next trophic level.8&choe=UTF-8
Question 8 (of 14)
Why do animals lose more heat energy than plants?9&choe=UTF-8
Question 9 (of 14)
What organisms occupy the first trophic level and what is their energy source?10&choe=UTF-8
Question 10 (of 14)
What do decomposers and detritus feeders such as soil organisms and the bottoms feeders in the river depend on for food?11&choe=UTF-8
Question 11 (of 14)
Once light energy has been absorbed by producers the chemical energy is available to the next trophic level. Energy is transferred from one organism to the next when three things are digested. Name the three things. 12&choe=UTF-8
Question 12 (of 14)
Explain why most food chains rarely have more than four trophic levels.13&choe=UTF-8
Question 13 (of 14)
Who uses some of the lost energy?14&choe=UTF-8
Question 14 (of 14)
