You found the relative densities of some solids and some liquids by some activities. List the solids and liquids in increasing order of relative density

How do you appreciate Pascal’s discovery in helping to make

hydraulic jacks.

How do you appreciate Archimedes discovery of force of buoyancy.

Iron sinks in water, wood floats in water. If we tied an iron piece to the same volume of wood piece, and dropped them in water, will it sink or float? Make a guess and find out whether your guess is correct or wrong with an experiment. Give reasons.

Liquid brakes in automobiles follow principle of bramha press (Pascal’s principle). What about air brakes? Collect the information about the working process of air brakes.