The very high levels of Iridium at the KT boundary was confirmed in different parts of the world and supported an already existing hypothesis, a supernova had caused the extinction. How was this hypothesis tested? • Scientists looked for planetary evidence of a supernova • Scientists ruled out all the other hypothesis and only the supernova was left • Scientists tested the amount of plutonium in the KT boundary • Scientists studied craters from ancient asteroids 2) How was community feedback important in developing the asteroid hypothesis? • Working alone allowed Walter to remain unbiased • Scientists working together were able to
The very high levels of Iridium at the KT boundary was confirmed in different parts of the world and supported an already existing hypothesis, a supernova had caused the extinction. How was this hypothesis tested? • Scientists looked for planetary evidence of a supernova • Scientists ruled out all the other hypothesis and only the supernova was left • Scientists tested the amount of plutonium in the KT boundary • Scientists studied craters from ancient asteroids 2) How was community feedback important in developing the asteroid hypothesis? • Working alone allowed Walter to remain unbiased • Scientists working together were able to
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter25: The Origin Of Life
Section: Chapter Questions
Problem 3ITD
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1) The very high levels of Iridium at the KT boundary was confirmed in different parts of the world and supported an already existing hypothesis, a supernova had caused the extinction. How was this hypothesis tested?
• Scientists looked for planetary evidence of a supernova
• Scientists ruled out all the other hypothesis and only the supernova was left
• Scientists tested the amount of plutonium in the KT boundary
• Scientists studied craters from ancient asteroids
2) How was community feedback important in developing the asteroid hypothesis?
• Working alone allowed Walter to remain unbiased
• Scientists working together were able to prove all the alternate hypotheses wrong
• Scientists collected multiple lines of evidence from different fields to support the hypothesis
• Other scientists were able to disprove the asteroid hypotheses
3) The evidence that an asteroid did hit earth at the KT boundary is strong. But did it cause extinction of the dinosaurs? What additional hypotheses are scientists investigating?
• Volcanic Activity
• Over population
.Climate Change
• Tectonic Activity
4) Choose the correct statements.
Many scientific questions were answered
There are no alternate hypotheses that explains the extinction of the dinosaurs
We cannot be 100% certain that an asteroid killed the dinosaurs
• Walter's hypothesis remained the same throughout his journey
5) While making observations and discussion within the scientific community were vital to this story, which part of the scientific process pushed the process forward? Hint: study the figure on page 11.
• Community feedback
.Testing Ideas
.
Societal outcomes
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