Earth & Space Science
You will get to learn all about the inner dynamics of the Earth and the theory of plate tectonics. In addition to learning how to measure and predict the location of earthquakes, you will learn about other natural disasters, and study the history of mass extinctions on Earth.
After completing this tutorial, you will be able to complete the following:
According to scientific evidence, when did five mass extinctions occur on Earth? Which one of these caused dinosaurs to become extinct?
~ 1. 443 million years ago
2. 354 million years ago
3. 248 million years ago
4. 206 million years ago
5. 65 million years ago; dinosaur extinction
What are some factors that may have contributed to these mass extinctions?
~ Mass extinctions may have been caused by volcanic events; an increase in sea level; impact events, such as a meteorite striking the Earth; or large changes in the Earth's climate.
How severe are mass extinction events?
~ Each of the mass extinction events destroyed approximately 50% of the Earth's genera. All together, over 98% of the species that have lived on Earth are now extinct.
|Approximate Time||2 Minutes|
|Pre-requisite Concepts||Students should be able to define the following terms: adaptability, evolution, and global cooling.|
|Course||Earth & Space Science|
|Type of Tutorial||Animation|
|Key Vocabulary||mass extinction,,|