Extrusive Rock
Extrusive rock explained in an easy to understand way:
Imagine you're baking a cake, and it overflows from the pan, creating a mess on the oven floor. This is similar to how extrusive igneous rocks form when molten lava spills out onto the Earth's surface and cools quickly. Just as the cake batter solidifies into a new layer on the oven floor, the lava hardens into rock, forming a crusty surface layer; both processes involve a hot, flowing substance spreading out and solidifying into a new form.
Practice Version
Extrusive Rock: Igneous rock that forms when lava cools on Earth's surface. Extrusive rock. Extrusive rock is formed from lava that cools quickly on the Earth's surface, creating fine-grained textures.