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From The Inside of the Earth’s crust!! I was a Metamorphic Rock! Which just means that I was going through a change, well why do I go through a change? Because deep inside the Earth’s crust, I am put under big pressures and very high temperatures. This causes me to change! Magma! In this process, it get’s so hot deep inside the Earth that I actually begin to melt! This molten material is called Magma! It rises up from the earth’s crust. And that is how we get volcanoes! I came out of the Volcano!! Now I am a intrusive igneous rock! I am finally cooling down, but it will take a while! It will take hundreds of years until I become a crystal rock! I am a very smooth rock, like granite. Weathering away! Oh no! what is happening, I am weathering away! 1. Hot and cold temperatures can cause rocks to break apart! 2. Different kinds of chemicals dissolve rocks. Rocks can even be dissolved by water, and acid rain causes rocks to weather away. 3. I can be broken up by tree roots that force themselves and cause cracks that eventually cause rocks to break I became small and tiny after I was weathered away, this means it is easier for me to travel. This is called Erosion. And eventually I end up in a lake, river or ocean. Layers of rocks are squeezed together and mix with water. They begin to stick together, they are formed by layers that build up after millions of years. They are stacked on top of each other. This is called Sedimentary rocks !