How are rocks and minerals such different colors?
Taylor Color of any mineral depends on the internal or atomic structure of that mineral and how light reacts to that structure. It is very complicated and several books have been written about color of rocks and minerals. How are rocks made? Kevin From three basic processes in the rock cycle: from molten liquid (igneous rock) that cools and hardens, from particles or grains that get bound together with some type of material (sedimentary rocks), or from the application of heat and pressure to pre-existing rocks (metamorphic) which causes changes in the minerals that make up the original rock. Why are they different shapes and sizes? Virginia Because there are many different types of rocks and they react differently to weathering and erosion. How long does it take for bones to turn into fossils? Peter It depends on the conditions underwhich the bones were buried and how much water flows through the sediment. An easy way to tell if a bone is fossilized is to heat it with a lighter. If you
