QR Challenge: Earth's Layers

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. 1. Convection currents occur in which of Earth's layers? A. Crust B. Lithosphere C. Mantle D. Solid core	C. Mantle
2. 2. Imagine you could travel in a straight line through Earth from a point on one side and come out on the other side. What compositional layer would you travel through in the exact center of Earth? A. Core B. Crust C. Lithosphere D. Mesosphere	A. Core
3. 3. Earth can be divided into three layers: the core, the mantle, and the crust. How are these three layers identified? A. By their plate tectonics B. By their structural features C. By their physical properties D. By their chemical composition	D. By their chemical composition
4. 4. The three compositional layers of Earth are the core, the mantle, and the crust. Which phrase best describes the crust? A. The innermost layer of Earth’s interior below the mantle B. The thin and solid outermost layer of Earth C. The hot, slow-flowing layer of Earth’s interior above the core D. The layer of Earth on which the tectonic plates move	B. The thin and solid outermost layer of Earth
5. 5. In which layer of Earth are the convection currents that directly result in tectonic plate motion found? A. Lithosphere B. Asthenosphere C. Mesosphere D. Inner Core	B. Asthenosphere
6. 6. How does the density of the Earth’s core compare to the other layers of the Earth? A. The core is the densest layer B. The core is the least dense layer C. The core is only less dense than the crust D. The core is only less dense than the mantle	A. The core is the densest layer
7. 7. Which BEST describes the physical properties of the Earth's core? A. semi-molten B. water and organic substances C. a solid lower part and a liquid upper part D. contains volcanic, sedimentary, and granitic rocks	C. a solid lower part and a liquid upper part
8. 8. Earth’s mantle is made of a dense thick material that allows movement of crustal plates. Crustal plate movement occurs because the mantle flows as a result of uneven heating inside the mantle. ____________________ are created by very hot material deep in the mantle rising, then cooling, sinking again, and then heating again and then repeating the cycle. A. magma flows B. magma currents C. convection waves D. convection currents	D. convection currents
9. 9. In this physical layer of Earth you will find tectonic plates. A. lithosphere B. asthenosphere C. mesosphere D. inner core	A. lithosphere
10. 10. This compositional layer of the Earth is made of magma and solid soft rock. A. crust B. mantle C. core D. mesosphere	B. mantle

 

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