Podcast
Questions and Answers
What is the leading theory regarding the cause of mass extinction 65 million years ago?
What is the leading theory regarding the cause of mass extinction 65 million years ago?
Species go extinct primarily because of changes in their environment.
Species go extinct primarily because of changes in their environment.
True
What effects did the asteroid impact have on Earth's climate?
What effects did the asteroid impact have on Earth's climate?
Blocked sunlight and changed the climate, setting off global wildfires.
Massive volcanic eruptions and changes in sea level are considered __________ factors that could have contributed to environmental decline.
Massive volcanic eruptions and changes in sea level are considered __________ factors that could have contributed to environmental decline.
Signup and view all the answers
Match the events with their potential impact on the extinction of species:
Match the events with their potential impact on the extinction of species:
Signup and view all the answers
What caused the extinction of dinosaurs 66 million years ago?
What caused the extinction of dinosaurs 66 million years ago?
Signup and view all the answers
What was the size of the asteroid that impacted Earth?
What was the size of the asteroid that impacted Earth?
Signup and view all the answers
What was one of the immediate effects of the asteroid impact?
What was one of the immediate effects of the asteroid impact?
Signup and view all the answers
Which of the following events resulted from the asteroid impact?
Which of the following events resulted from the asteroid impact?
Signup and view all the answers
What species eventually dominated Earth after the extinction of dinosaurs?
What species eventually dominated Earth after the extinction of dinosaurs?
Signup and view all the answers
Study Notes
Mass Extinction 65 Million Years Ago
- Widespread species extinction is linked to substantial environmental shifts.
- A large asteroid impact, approximately 10 kilometers wide, is a leading theory for the extinction event 66 million years ago.
- This impact, located in the Gulf of Mexico, caused widespread devastation including forest fires, earthquakes, and tsunamis exceeding 90 meters high.
- The impact created a thick dust cloud that blocked sunlight, initiating a global cooling event.
- The lack of sunlight killed plants, leading to the extinction of plant-eating dinosaurs, and subsequently, the extinction of meat-eating dinosaurs.
- Dinosaurs dominated Earth for 165 million years before their extinction.
- Other potential contributing factors to the extinction event include large-scale volcanic eruptions and sea-level changes.
- Mammals eventually became the dominant species after the extinction of dinosaurs.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore the causes and effects of the mass extinction event that occurred 65 million years ago. This quiz delves into theories such as the asteroid impact, volcanic activity, and their impact on Earth's climate and biodiversity. Test your knowledge about this critical period in Earth's history!
