How do minerals become rocks and rocks become soil?
Minerals or small particles of rocks, become rocks through pressure and temperature, often deep inside the earth’s core, or simply through pressure for instance on the seabed. Wherever many small things become something big it is usually through compression, temperature, or pressure. The opposite process – large things being worn into smaller particles – usually comes through another sort of force. Either weathering, erosion – action by wind, rain, and water – is responsible. Gradually many rocks are eroded by movement of ice and water over them or the wind action also to become finer and finer and form little grains – e.g. of sand or of soil. How do we know magma does not originate in the liquid outer core? Specifically gases that are found in the magma correspond to having been formed at pressures many times greater than those in the outer core have, and rather therefore indicate that it was formed elsewhere. How can we calculate or estimate the evaporation from lakes? Factors such a
