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QR Challenge: Food web and chains

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. What are decomposersOrganisms that break down organic matter
2. What is biomass2Amount of living tissue2
3. How much of the energy is given off at each trophic level390%3
4. Give an example of a food chain.4Various answers4
5. What are populations made up of5Individuals of the same species5
6. Why is biodiversity important6It provides lots of cheap and important resources6
7. What increases a population7Number of births and immigration greater than deaths and the number of people leaving an area7
8. What kind of energy do producers use and make8Use light energy, make chemical energy8
9. Give an example of a decomposer.9Various Answers9
10. Which level in food web or chain would have the least amount of energy available10Top level carnivores10
11. What is carrying capacity11Amount of organisms that can survive in a particular area11
12. What kind of energy do consumers use and make12Use chemical make heat (from cell energy)12
13. If the population of a prey decreases, what happens to the population of its predator13Decreases13
14. If a producer has 400 units of energy, how many units of energy will be available to the herbivores who eat the producers?1440 units14
15. Where is the greatest amount of energy located in a food web15Producer level15
16. Give an example of a possible abiotic factor in an ecosystem.16Various Answers16
17. Give an example of a carnivore.17Various Answers17

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_are_decomposers

Question 1 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_biomass2

Question 2 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=How_much_of_the_energy_is_given_off_at_each_trophic_level3

Question 3 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=Give_an_example_of_a_food_chain.4

Question 4 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_are_populations_made_up_of5

Question 5 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=Why_is_biodiversity_important6

Question 6 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_increases_a_population7

Question 7 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_kind_of_energy_do_producers_use_and_make8

Question 8 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=Give_an_example_of_a_decomposer.9

Question 9 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=Which_level_in_food_web_or_chain_would_have_the_least_amount_of_energy_available10

Question 10 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_carrying_capacity11

Question 11 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_kind_of_energy_do_consumers_use_and_make12

Question 12 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=If_the_population_of_a_prey_decreases,_what_happens_to_the_population_of_its_predator13

Question 13 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=If_a_producer_has_400_units_of_energy,_how_many_units_of_energy_will_be_available_to_the_herbivores_who_eat_the_producers?14

Question 14 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=Where_is_the_greatest_amount_of_energy_located_in_a_food_web15

Question 15 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=Give_an_example_of_a_possible_abiotic_factor_in_an_ecosystem.16

Question 16 (of 17)

 


Food web and chains: QR Challenge

https://www.classtools.net/QR/decode.php?text=Give_an_example_of_a_carnivore.17

Question 17 (of 17)