EVERYDAY SCIENCE

Detailed explanation-1: -Igneous rocks (derived from the Latin word for fire) are formed when molten hot material cools and solidifies.

Detailed explanation-2: -Extrusive Igneous Rocks: Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth’s surface.

Detailed explanation-3: -Any rock that forms from the cooling of magma is an igneous rock. Magma that cools quickly forms one kind of igneous rock, and magma that cools slowly forms another kind. When magma rises from deep within the earth and explodes out of a volcano, it is called lava, and it cools quickly on the surface.

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: -They are the most widespread of all the igneous rocks. Most basalts are volcanic in origin and were formed by the rapid cooling and hardening of the lava flows. Some basalts are intrusive having cooled inside the Earth’s interior.