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Minerals, Rocks, Renewable and Non Renewable Resources Study Guide Fuels are substances that provide energy as a result of a chemical change The 3 major fossil fuels are coal, oil, and natural gas Fossil fuels are energy-rich because they contain hydrocarbons Fossil fuels are nonrenewable because they take hundreds to millions of years to form Solar energy from the Sun will not run out for billions of years Coal forms from decaying plant remains Coal is the most plentiful fossil fuel in the United States Nuclear fusion produces more energy per atom than nuclear fission Wood is a biomass fuel Geothermal energy is produced from the intense heat beneath Earth’s surface Minerals are inorganic solids found in nature, having no living matter inside Streak tests the color of a mineral’s powder An ore is a rock that contains a metal or other useful mineral Smelting is the process used to remove metal from ore The hardest known mineral is a diamond Talc is the softest known mineral Luster refers to how a mineral reflects light from its surface A rock is made up of a mixture of minerals and other materials Metamorphic rocks are formed from heat and pressure deep beneath Earth’s surface Igneous rocks form from the cooling of magma below or lava at the earth’s surface Lava makes extrusive igneous rocks Granite is the most abundant igneous rock Deposition is the process by which sediment settles out of the water or wind carries it. Cementation is the process in which minerals crystallize and glue particles of sediment together. Chalk is an organic sedimentary rock made of skeletons of oceanic microscopic living thing A conglomerate is a sedimentary rock made from rounded fragments of other rocks The rock cycle is the process of rocks slowly changing on and inside the Earth’s surface