11-08-2012, 04:19 PM
These are some physics working model for class 9
Crystal growth rates versus solution strengths, temperature, etc
Egg Floatation
The mathematics of snowflakes
Index of refraction of liquids versus temperature
Experimenting with various separation techniques (e.g. electrophoresis)
Make a universal Reflector
Observations of magnetic permeability of different materials
Impact force of falling object
The effect of solar activity on radio propagation
Index of refraction of liquids versus amount of additive