Thursday, February 25, 2010
Making Fossils
This week we have been very busy researching Dinosaurs. We have been finding out a lot of information about them and using a lot of different resources!
One area that really interested us was fossils. We learned that fossils are formed over millions of years and that not all dinosaurs or objects turn into fossils. A fossil is formed when an animal dies or leaves a print in the soft ground. That animal or print is covered with layers of rock and dirt and over time (millions of years) the object turns to stone. Then erosion occurs which eats away the layers of rock and the fossilised remains appear. We thought this was very cool so we made our own fossils. First we got chicken bones and shells from home. Next we got some clay and rolled it out flat. Then we placed 2 or 3 objects onto the clay and pressed them down firmly. Next we layered another piece of clay on top. Finally we peeled away the top layer of clay and were left with an imprint of the object. You could try to make one of these at home?
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