Fossil dating worksheet

websites often add things you don't need or break pages in inappropriate spots.You can copy the webpage into an editor, such as word or openoffice and modify it for your classroom needs.Ammonites, shelled relatives of today’s octopus, make ideal index fossils.

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Explain how the chart illustrates divergent and phyletic speciation.

The Age of Dinosaurs was so many millions of years ago that it is very difficult to date exactly.

Scientists use two kinds of dating techniques to work out the age of rocks and fossils. This considers the positions of the different rocks in sequence (in relation to each other) and the different types of fossil that are found in them.

Scientists know exactly how long it will take for half the quantity of the element to change, and this state is known as its half-life.

After another half-life has passed, the element will have decayed to a quarter of its original amount.

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