Fossils
Texte du Storyboard
- What a nice day for a walk, I just wish that sun wasn't so bright, I can't see where I'm going!
- OOOOHHHHH NOOOOOO! I'm falling! I shouldn't have walked on a cliff!
- Aw man! I am dead!
- Millions of years ago animals like dinosaurs roamed the earth...
- Guys look! That's the remains of little jimmy!
- Sometimes they would die under the perfect conditions to create what we now call a fossil.
- Mud and sand called sediment cover the body and the dinosaur. . The lower layer of soft mud and sand are pressed into hard rock and now the dinosaur is completely surrounded by compressed stone.
- I found a dinosaur fossil!!! I'm gonna take this back to the lab for analysis.
- The bone is slowly washed away by groundwater and leaves a space in the shape of the dinosaur called a natural mold. Now the groundwater brings down little rocks that eventually fill up the mold over the course of millions of years. The rocks are pressed further and further under ground.
- Many years later the rock that surrounds the fossil rises to the earth's surface. This can occur during an earthquake or when a mountain rises naturally. The top layer of the rocks are washed up by wind and rain leaving the surface of the fossil to be exposed.
- Millions of years Later!!!
- Paleontologists use these fossils to learn about where they came from and what it was like at that time.
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