You can find out which types of rocks absorb water best by testing for porosity. These rocks, including pumice and sandstone, increase in weight and size as they take in water. Just like a sponge, porous rocks have the ability to absorb water and other liquids. Science Experiment With Rocks That Absorb Water. Are there any rocks that can absorb water? Also unlike an asphalt or concrete driveway, you can install river rock gravel yourself. They also provide superior drainage, allowing water to soak into the ground, instead of running off. River rock driveways work well because unlike asphalt or concrete, they will not split or dent overtime. Paper towels are especially absorbent because their cellulose fibers have empty spaces-tiny air bubbles-between them. As a result, paper readily absorbs water. Paper is made of cellulose, which water molecules like to cling to. This is expected, as the tiny space between paper towel layers helps hold more water.
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