Where Did Everyone Go You may have noticed
- Slides: 26
Where Did Everyone Go! You may have noticed that there are no dinosaurs around these days. In fact, there haven't been any around for about 66 million years.
Extinction Theory #1 Asteroid hits the earth. • An asteroid hits the earth. • Dust and debris are scattered into the atmosphere. • The impact causes changes in earth’s atmosphere.
Write one or two questions that you have about the Asteroid Theory.
Extinction Theory #2 Volcanic Eruption • Giant volcano erupts. • The ash goes into the atmosphere. • Carbon Dioxide builds up in atmosphere. • Earth heats up, causing greenhouse effect.
Write one or two questions that you have about the Volcanic Eruption Theory.
Extinction Theory #3 Climate Changes • Earth’s Orbit changed. • Became further away from the sun. • Caused the Ice Age.
Write one or two questions that you have about the Climate Change Theory.
Extinction Theory #4 Supernova (star) Explodes • A star explodes near earth. • Radiation contaminates the atmosphere. • Radiation kills all living things.
Write one or two questions that you have about the Super Nova Theory.
Extinction Theory #5 Disease attacks dinosaurs • Over time dinosaurs contracted diseases. • Diseases were spread throughout dinosaur species. • They were unable to fight off the diseases.
Write one or two questions that you have about the Disease Theory.
What do you think happened to the dinosaurs? • Asteroid • Volcanic Eruption • Climate Change • Super Nova • Diseases • Or Something Else
Write one or two questions that you have about a different theory.
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