Change search
ReferencesLink to record
Permanent link

Direct link
Topography and morphology analysis of marine nanoparticles and a pedagogical study of representations used for improving a high school experiment
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
2012 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The Arctic Summer Cloud Ocean Study expedition took place during the autumn of 2008 and brought back water and air samples. One theory was that marine particles were shot into the atmosphere by bubble bursting and, while in the atmosphere, acted as cloud condensation nuclei. Particles collected from the subsurface water, surface microlayer and just above the surface had their topography and morphology analyzed using a scanning electron microscope. Due to a lack of EDS analysis it's impossible to say for sure if the particles found were the same found in previous studies, just that it is highly likely that they are. No evidence against the marine particles being able to act as cloud condensation nuclei was found but the data gathered was not sufficient to strengthen the theory either.

The scanning electron microscope was also used in a pedagogical study, analyzing how operators with different knowledge and prior experience interact with the microscope's images. These results as well as knowledge gained from literature studies were used to improve a high school experiment regarding centripetal acceleration. The main issue with the experiment was that what the students learned performing the experiment was not the same as the theoretical models the teachers wished the students to learn. The reason for this was because the experimental equipment lacked the centripetal model's external representations such as force arrows. If a simulator would be incorporated into the lab centripetal acceleration representations could be visualized and a clearer connection between experiment and theory could be made.

Place, publisher, year, edition, pages
2012. , 112 p.
EES Examensarbete / Master Thesis, XR-EE-SPP 2012:007
National Category
Meteorology and Atmospheric Sciences
URN: urn:nbn:se:kth:diva-107205OAI: diva2:575251
Educational program
Master of Science in Engineering - Engineering and of Education
Physics, Chemistry, Mathematics
Available from: 2012-12-10 Created: 2012-12-08 Last updated: 2012-12-10Bibliographically approved

Open Access in DiVA

fulltext(5936 kB)180 downloads
File information
File name FULLTEXT01.pdfFile size 5936 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
Space and Plasma Physics
Meteorology and Atmospheric Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 180 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 168 hits
ReferencesLink to record
Permanent link

Direct link