ELI5: Explain Like I'm 5

Rock formation

Rock formation is how rocks are made. Just like when we make a cake, we need certain ingredients and a recipe, rocks also need certain ingredients and specific steps to be made.

First, let's talk about the ingredients. Rocks are made up of minerals, which are natural substances that have their own unique properties. Think of each mineral like a different ingredient in a recipe. We need different amounts of each ingredient to make a particular type of rock, just as we need different amounts of flour, sugar, and eggs to make a certain type of cake.

Next, let's talk about the steps in making rocks. These steps can happen over a long period of time, sometimes millions or billions of years. The first step is called weathering. This is when the rock on the surface of the Earth is broken down by things like wind, water, and ice.

Once the rock is broken down into smaller pieces, the next step is called erosion. This is when the smaller pieces of rock are moved by natural forces like wind and water. Think of how sand dunes are formed by the wind or how streams carve out canyons.

After erosion, the smaller pieces of rock are deposited somewhere else. This is called sedimentation. The layers of sediment build up over time to create what's called sedimentary rock. Think of the layers of a cake being built up to create a whole cake.

But sometimes, rocks aren't just made from sedimentation. Sometimes, there are things that happen deep inside the Earth, like volcanic eruptions or when the Earth's plates move around. This creates heat and pressure that can transform rocks into different types of rocks. This is called metamorphism. Think of how melting chocolate creates a different texture and form.

So that's a brief explanation of rock formation: like baking a cake, rocks need certain ingredients and specific steps to be made. These steps can take a long time, sometimes millions or billions of years!
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