Metamorphic Rocks When under heat and pressure igneous rocks and sedimentary rocks change their form and more precious rocks are formed to be known as metamorphic rocks.Examples:★ Granite into granite gneiss.★ Coal into slate.★ Slate into schist.★ Limestone into marble.
Uses of Rocks Hard rocks are used in making buildings and barrages. Houses and buildings are built of rocks (stones, slates, granite, marble). Stones are used in numerous games: Seven stones (phitthoo). Hopscotch (stapu, kit). Five stones (gitti). Rocks (stones and slates) are used in building bridges, embankments.
Rock CycleIgneous rocks change into sedimentary rocks, igneous and sedimentary rocks under heat and pressure change into metamorphic rocks, metamorphic rocks into igneous rocks or sedimentary rocks due to melting or wearing down. This process is called the rock cycle.
Formation of Extrusive and Intrusive Rocks Due to extreme heat in the interior of the earth, rocks are found in the form of molten material called magma. When magma comes out on the surface of the earth, it cools down and turns into solid rocks. Such rocks are termed as extrusive rocks.Examples:★ Basalt.★ Deccan Trap …
Three Types of Rocks Igneous Rocks Sedimentary Rocks Metamorphic Rocks.
Rock A mass of mineral matter that makes up the crust of the earth is called rock.Or Aggregates of minerals are termed as rocks. Examples: See part
Three Layers of the Earth Crust Mantle Core.
In 2003, a refined result was yielded by Holger Isenberg: 40°52′N 34°34′E, also in Turkey, near the district of İskilip, Çorum Province, approx.200 km northeast of Ankara. In 2016, Google Maps marked Isenberg’s result of 40°52′N 34°34′ECoordinates: 40°52′N 34°34′E as the geographical center of Earth.
the central, innermost, or most essential part of anything. Also called magnetic core . Electricity. the piece of iron, bundle of iron wires, or other ferrous material forming the central or inner portion in an electromagnet, induction coil, transformer, or the like. (in mining, geology, etc.)
Both the inner and outer cores consist primarily of iron and nickel. They’re extremely hot, with temperatures ranging from 7200–9000℉ (4000–5000℃). The inner core is under intense pressure, which keeps it solid despite high temperatures. Outer Core: The outer core, which is liquid, is about 1300 miles (2092 km) thick.
