The energy that comes from nuclear fusion on the Sun produces most of the energy on Earth. The solar energy that is impacting Earth can be used to generate electricity and heat. Electricity is either converted by solar cells (called photovoltaic) or through solar power plants.
General Weights. Solid rock is estimated at 2.5 to 3tons per cubic meter. If rock is crushed into uniform sizes, the presence of open space between the particles causes the load to be lighter -- approximately 1.6 tons per cubic meter.ixed sizes of crushed rock can range from 1.6 to 2.2 tons per cubic meter. Weighing in at .92 tons are masonry sand, building sand, and stone chips or flakes. These are some of the lightest materials. The next level, at just under one ton, are concrete sand and airfield sand.
Crushed stone is not a standard commodity.. It is made by mining one of several types of rock such as limestone, granite, trap rock, scoria, basalt, dolomite, or sandstone; crushing the rock; and, then screening the crushed rock to sizes that are suitable for the intended end use.Crushed stone is the world's most basic mineral commodity.rushed stone is a bulk commodity that is very heavy and very costly to handle and transport. In 2012, the average cost of crushed stone in the United States at the plant site was $9.75 per metric ton. Transportation to the job site can significantly increase the cost of the stone.