Frozen bubbles - Classroomchat

Did you know? That you can freeze bubbles?
The Canberra Times Winter Photo Competition
BUBBLE WRAP: Debbie Hartley, of Kambah, snapped this winning photograph of a frozen bubble
on a particularly frosty morning. Photo: Debbie Hartley
Source: http://www.neatorama.com/2009/01/03/frozen-bubbles/
Source: http://sciencemadefun.net/blog/?p=348
http://www.flickr.com/photos/barefootsimms/6861635811/
Assignments
Class: 3A & 4A
1. Make your own frozen bubbles. Write a full experimental report. Take photos.
Experimental report
Aim: To find out how to make the best frozen bubbles.
Hypothesis: Using more soap in the mixture makes better frozen bubbles.
Method: http://www.wikihow.com/Make-a-Frozen-Bubble
Results: pictures
Discussion of results: describe your results in words
Error analysis: what do you think you could have done better?
Conclusion:
2. Find and write the addresses of at least three other websites with frozen bubble pictures.
3. Find out what is „surface tension“ and „thin films“ use:wikipedia.
Class: 5A & 6A & 7A
1.
2.
3.
4.
Learn about thin films and their uses: http://www.tfp-thinfilms.com/de/Opt-Filter.6.html
More possible sources: http://www.uibk.ac.at/ionen-angewandte-physik/tft/publications.html
Maybe look at: http://oceanthinfilms.com/
Now write a short summary about how „Thin Film Interference“ and how you could
determine the thichness of the film by looking at the wavelength of the reflected light.
Use: http://physics.bu.edu/~duffy/PY106/Diffraction.html