There are almost as many hypotheses about what killed the dinosaurs as there are researchers studying the topic. Anyone can make a hypothesis — come one, make one up right now — what do YOU think killed the dinosaurs? Now, knowing what you do about what science is, evaluate that hypothesis. Is it falsifiable? Has it been subjected to peer review? Is it replicable by another scientist? Good. Now you're ready to examine what scientists have proposed over the years. These little gems have not withstood the test of peer review well. We'll name a few, describe them, and evaluate their scientific value. Show
You've seen some not-so-good hypotheses; continue to see the modern, more scientific ones. Current Arguments Back to DinoBuzz Learn more about the Dinosauria What was the critical piece of evidence that supported the dinosaur killing asteroid hypothesis?To test the hypothesis that an asteroid impact caused the K-T mass extinction, key evidence included impact ejecta, tsunami debris, and careful gravitational field measurements. H. Although the totality of evidence is important, certain pieces of evidence are more critical than others to confirming a hypothesis.
What is the evidence that supports the theory how dinosaurs became extinct?The asteroid impact theory is supported by quite a bit of evidence. For example, the fossil record shows that dinosaurs went extinct very suddenly. This is more consistent with a major disaster like an asteroid impact than it is with a gradual change in climate or volcanic activity.
What hypothesis explains why dinosaurs became extinct?The Alvarez hypothesis posits that the mass extinction of the non-avian dinosaurs and many other living things during the Cretaceous–Paleogene extinction event was caused by the impact of a large asteroid on the Earth.
What was the critical piece of evidence that supported the hypothesis that an asteroid struck Earth 65 million years ago?What was the critical piece of evidence that supported the hypothesis that an asteroid struck Earth about 65 million years ago? The Chicxulub crater in Mexico.
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