Dinosaur Extinction
What really killed the dinosaurs?
An investigation into the extinction of the dinosaurs, exploring the asteroid impact theory, volcanic activity, and the surprising truth about modern-day dinosaurs.
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Dinosaur Basics: What Happened at the End?
1. What is the name of the period when the dinosaurs disappeared?
- A. The Jurassic Era
- B. The Cretaceous-Paleogene (K-Pg) boundary
- C. The Ice Age
- D. The Age of Mammals
2. Why does the text compare the asteroid's impact to covering windows with thick, black curtains?
- A. To show how the asteroid looked like a curtain
- B. To explain why dinosaurs liked dark caves
- C. To describe how dust blocked the sun and stopped plant growth
- D. To explain how scientists hide fossils
3. What is Iridium, and why is it important to the extinction story?
- A. A type of dinosaur bone
- B. A metal often found in asteroids that proves they hit the Earth
- C. A type of volcanic rock found in India
- D. A gas that made dinosaurs sick
4. What happened to the descendants of the dinosaurs?
- A. They all went extinct completely
- B. They turned into crocodiles
- C. They evolved into the birds we see today
- D. They became giant land mammals
Detective Work: Solving the Mystery
1. How did the volcanoes in India, known as the Deccan Traps, make things harder for dinosaurs?
- A. They caused the asteroid to fly toward Earth
- B. They filled the air with gases that changed the climate, stressing the ecosystem
- C. They provided too much food for the dinosaurs
- D. They turned the oceans into ice
2. Why were creatures like crocodiles and frogs able to survive the extinction?
- A. They were too fast for the asteroid to hit
- B. They lived in micro-habitats like deep water or underground burrows
- C. They were cold-blooded and didn't need any food
- D. They were not living on Earth at the time
3. What does the 'Signor-Lipps Effect' remind us about finding dinosaur fossils?
- A. That dinosaurs were actually very small
- B. That we will eventually find every dinosaur that ever lived
- C. That the last fossil we find isn't necessarily the very last animal to live
- D. That the fossil record is perfectly clear and easy to read
4. Which phrase best describes the dinosaur extinction event?
- A. A simple process that happened over millions of years
- B. A 'one-two punch' consisting of volcanic activity followed by an asteroid strike
- C. A result of dinosaurs being too slow to walk away from danger
- D. A planned event caused by a cold-blooded diet
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