Week 9

 Lab - 

This week in lab, we created a timeline of significant events since earths beginning. We learned about the hot stage, where earth was nothing but lava and hot rock, then it became a giant snowball, oxygen increase, aquatic plants and animals arrive and, Pangea occurs, and then land plant and animals, ending with human domination. 

Pressbook - 

This week in the press book we read about Earths Geological timeline. Earth was formed about 4.65 billion years ago. Since then we have had the creation of our moon, people, animals, and plants. But before any of these things could be created, the Earth had to go through stages of heat, snowballs, and explosions. We found evidence of the snowball phase in sedimentary rocks. Next, the press book discusses the Pangaea and plate tectonics. About 200 million years ago, earth was a supercontinent that started breaking apart as the plates moved away from each other. Alfred Wegener had a theory known as continental drift, which was one of the easiest ways to explain how the continents moved over time.