EVERYDAY SCIENCE

Detailed explanation-1: -These are the rocks that form at erupting volcanoes and oozing fissures. The magma, called lava when molten rock erupts on the surface, cools and solidifies almost instantly when it is exposed to the relatively cool temperature of the atmosphere.

Detailed explanation-2: -When lava reaches the surface of the Earth through volcanoes or through great fissures the rocks that are formed from the lava cooling and hardening are called extrusive igneous rocks.

Detailed explanation-3: -Igneous rocks are formed when hot, molten rock (magma) cools and solidifies. There are two main types of igneous rock, depending on where the magma cooled: Intrusive igneous rocks form when the magma comes from deep underground and is forced into the upper layers of the Earth’s crust, where it cools slowly.

Detailed explanation-4: -Igneous rocks form from the cooling and hardening of molten magma in many different environments. These rocks are identified by their composition and texture.

Detailed explanation-5: -Cooling. The process that hardens magma and turns it into igneous rock. The cooling of magma can occur either underneath or on the earth’s surface. Erosion.