Plate tectonics

Over the last few days we have been learning about plate tectonics. These plates float on flowing magma and there are multiple ways they can interact with each other. These interactions are divergent (two plates separating), convergent (two plates colliding), and transform (two plates sliding past each other). We chose to write about an article about the recent earthquake in Japan. This earthquake was caused by two convergent oceanic plates which shocked Japan and created a tsunami and an earthquake.

http://www.huffingtonpost.com/2013/10/25/japan-earthquake-fukushima-prefecture_n_4164181.html

Earths History

Over about the last week we have been studying earth history and we have learned many things some of the things we learned about included that the Earth was formed about 4.6 billion years ago. In the Precambrian era, the first life formed. Single celled cyanobacteria was developed. After that the Paleozoic era, life continued to develop. More complicated organisms were formed and fish and reptiles evolved. The Mesozoic era was basically the age of Dinosaurs. In the Cenozoic era, most of the species we see today were formed. Continues to the present. Many species went extinct over the years. These include the Ordovician, the Devonian, the Permian, the Triassic, and the Cretaceous extinctions.

We made a to scale timeline in class of the earth’s history. which included multiple events that happen over earth's history. the only difficulty we had was figuring out the right measurements to make the timeline “to scale”