11-08-2012, 04:12 PM
simple working model is "take a bottle and make 3 holes in it,at different 3 points vertically,(1st one at the top of the bottle,2nd 1 in the middle & the 3rd 1 at the bottom) and observe the experiment,you will see that, water flows out from the 3rd hole with greater pressure compared 2 the 1st 2 hole(4rm 2nd hole it will flow out with medium pressure and 4rm d 1st hole it will flow out with least pressure),this proves that pressure of water is maximum at the bottom of water(in the bottle in this case)...in seas and oceans it the same and it helps to keep the body of deep sea creatures ...and this is the reason why they burst on comin out of water..
And some physics working model lists
Crystal growth rates versus solution strengths, temperature, etc
Index of refraction of liquids versus temperature
The mathematics of snowflakes
Make a universal Reflector
Egg Floatation
Impact force of falling object
The effect of solar activity on radio propagation
Observations of magnetic permeability of different materials
Index of refraction of liquids versus amount of additive
Experimenting with various separation techniques (e.g. electrophoresis)