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WHAT KILLED THE DINOSAURS?

VS

CAN OZERDEM 11F

Contents Page

Page 1: ............................................................Title Page

Page 2: .....................................................Contents page

Page 3: ..................................................................Introduction

Page 4: ................................................Scientific Theory

Page 5: ...............................What killed the Dinosaurs?

Page 6: ................................What killed the Dinosaurs; was it the asteroid collision or the volcanic eruption?

Page 8: ..................................Evidence against my idea

Page 9:...........................................................Conclusion

Page 10: ....................................................Bibliography

INTRODUCTION

I have been assigned to study a scientific question in detail. The question I have chosen to study is "What killed the dinosaurs?" the reason I have chosen this question is because over 100s of years this question is trying to be solved but every time it is attempted new evidence and theory is found.

Although there are two main theories' (The asteroid collision and the volcanic eruption) scientists have found other evidence to make their own theory's today I am going to talk about these theories and which one I think is accurate.

Definition of a reliable source: Reliable sources are authors or publications regarded as trustworthy or authoritative

Thursday, 4 March 2010

An international panel of experts has strongly endorsed evidence that a space impact was behind the mass extinction event that killed off the dinosaurs.

He added: "The explosion of hot rock and gas would have looked like a huge ball of fire on the horizon, grilling any living creature in the immediate vicinity that couldn't find shelter."

They also added that the crater weren't a direct cause of the mass extinction they claimed that the crater theory caused other problems such as lack of food and resources.

There are also other evidences supporting other theories I will also talk about them but personally I think the mass extinction was linked to the crater theory.

Scientific Background

There is a lot of theory's hiding behind the question "What killed the dinosaurs?" Some of the theories are the crater theory, the ice age theory and the volcanic eruption theory.

) The crater was discovered by Glen Penfield, a geophysicist who had been working in the Yucatán while looking for oil during the late 1970s. The asteroid collision theory, which was brought to wide attention in 1980 by Walter Alvarez and colleagues, links the extinction event at the end of the Cretaceous period to a bolide impact approximately 65.5 million years ago.
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2) Before 2000, arguments that the Deccan Traps flood basalts caused the extinction were usually linked to the view that the extinction was gradual, as the flood basalt events were thought to have started around 68 million years ago and lasted for over 2 million years. However, there is evidence that two-thirds of the Deccan Traps were created in only 1 million years about 65.5 million years ago, and so these eruptions would have caused a fairly rapid extinction, possibly over a period of thousands of years, but still longer than would be expected from a single impact ...

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