Fossils and Formation PDF

How fossils are formed 1. Something dies and is covered by sediment 2. Sediment turns to rock, thing to fossil 3. Fossil flattened by the layers of rocks 4. Rock is folded and eroded and the fosil can be seen on the surface Dating Fossils Radioactive carbon dioxide (RCD) is naturally present in the...

How fossils are formed 1. Something dies and is covered by sediment 2. Sediment turns to rock, thing to fossil 3. Fossil flattened by the layers of rocks 4. Rock is folded and eroded and the fosil can be seen on the surface Dating Fossils Radioactive carbon dioxide (RCD) is naturally present in the air. And living things are constantly incorporating small amounts if carbon into their body tissue. After death the intake stops. RCD is slowly released from the body and begins to break down into its non radioactive form. By calculating the amount of RCD in the body you can work out when the fossil has died. This is called Absoute Dating, and can be used to calculate the age of fossils died thousands of years ago. You can also calculate the age of fossils by calculating the numbers of rock layed in the fossil. A fossil is a preserved part or trace of a plant or animal from a long time ago, often found in rocks. They form when an organism is buried quickly after dying, preventing decay, and minerals gradually replace its remains over time.