Relative dating of a fossil

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Watch this video to find out how we use index fossils to establish the relative ages of rocks.In previous lessons, we talked about the Geologic Time Scale and how scientists use it to piece together the history of the earth.In this activity, students begin a sequencing activity with familiar items — letters written on cards.Once they are able to manipulate the cards into the correct sequence, they are asked to do a similar sequencing activity using fossil pictures printed on "rock layer" cards.Relative dating is a dating method that used to determine determine the relative ages of geologic strata, artifacts, historical events, etc.

Although most attention in today's world focuses on dinosaurs and why they became extinct, the world of paleontology includes many other interesting organisms which tell us about Earth's past history.

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The study of fossils and the exploration of what they tell scientists about past climates and environments on Earth can be an interesting study for students of all ages.

Teaching about Earth's history is a challenge for all teachers.

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