Density
http://www.tclauset.org/20_ESbk/ch05.pdf
Buoancy
Archimedes principle- https://www.youtube.com/watch?v=2RefIvqaYg8
https://www.youtube.com/watch?v=OrpeXFpHLmw
http://www.youtube.com/watch?v=2afDLk-JzEY&;;feature=related
story of Archimedes https://www.youtube.com/watch?v=0v86Yk14rf8
lactometer - https://www.youtube.com/watch?v=Kz9RnPzLfiE https://www.youtube.com/watch?v=F_li5vrYHvg
Non Newtonian fluids
https://www.sciencelearn.org.nz/resources/1502-non-newtonian-fluids
