Rocks Made of Air
Pores are small openings that allow air and moisture to permeate the surface of a material. Porosity is the measure of these voids relative to the solid structure. Porosity is a significant consideration in many fields, including ceramics, hydrogeology, construction and metallurgy.
The independent variables in this experiment are the kinds of rocks, and the dependent variable is the amount of water they retain. The constants are the containers, the amount of water and the conditions.
Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.