EESA06H3 Chapter 1: Chapter 1
Document Summary
Planet earth: planet earth is 4. 5 billion years old, way we see oceans and lands have changed over those billions of years, continents are constantly moving (the environment changed drastically) where we wake up tomorrow we would have moved from today. through plate tectonics we move south west at a very slow pace; around the thickness of a piece of paper every day. rocks records environment & climate changes, erosion, extreme heat or cold. glacial erratic: white stone = marble, use to be called limestone, near the. rocks are used to construct maps of yesteryear. pangea = supercontinent 225mya when all the continents were together, over time the continent dispersed and broke up: pan means all together , gea means land . amasia: the second supercontinent in the future when the continents go back together, the supercontinent cycle, forming and breaking, is earth"s history, happens every 4 billion years.
