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QR Challenge: The Life Cycle of Stars

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 is a star made up of in the beginnning?gas and dust
2. What is nuclear fusion?star gets hotter and hydrogen changes to helium
3. What happens when the star gets older? loses its material
4. List 7 things that stars can be classified by.size, mass, brightness, color, temp, spectrum, age
5. Describe a main-sequence star.2nd and longest stage, energy is generated and released, size will not change
6. What is a red giant?last stage, expands and cools using its hydrogen, can be a lot bigger than the sun
7. A small hot star that is the leftover center of an older star is what?white dwarf
8. How long can white dwarfs shine for before cooling?billions of years
9. What diagram is used to study the lives of stars?H-R diagram
10. Where are most stars on the H-R diagram?Main sequence
11. What is a supernova?gigantic explosion when a massive star collapses and throws its out layers into space
12. What is a neutron star?star formed by collapse of the center of a massive star, all particles are neutrons
13. A spinning neutron star is called what?pulsar
14. What causes a black hole?collapse of a star with 3x the mass of the sun, light cannot escape the gravity

 


The Life Cycle of Stars: QR Challenge

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

Question 1 (of 14)

 


The Life Cycle of Stars: QR Challenge

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

Question 2 (of 14)

 


The Life Cycle of Stars: QR Challenge

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

Question 3 (of 14)

 


The Life Cycle of Stars: QR Challenge

https://www.classtools.net/QR/decode.php?text=List_7_things_that_stars_can_be_classified_by.

Question 4 (of 14)

 


The Life Cycle of Stars: QR Challenge

https://www.classtools.net/QR/decode.php?text=Describe_a_main-sequence_star.

Question 5 (of 14)

 


The Life Cycle of Stars: QR Challenge

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

Question 6 (of 14)

 


The Life Cycle of Stars: QR Challenge

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

Question 7 (of 14)

 


The Life Cycle of Stars: QR Challenge

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

Question 8 (of 14)

 


The Life Cycle of Stars: QR Challenge

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

Question 9 (of 14)

 


The Life Cycle of Stars: QR Challenge

https://www.classtools.net/QR/decode.php?text=Where_are_most_stars_on_the_H-R_diagram?

Question 10 (of 14)

 


The Life Cycle of Stars: QR Challenge

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

Question 11 (of 14)

 


The Life Cycle of Stars: QR Challenge

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

Question 12 (of 14)

 


The Life Cycle of Stars: QR Challenge

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

Question 13 (of 14)

 


The Life Cycle of Stars: QR Challenge

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

Question 14 (of 14)