Seodaemun natural history museum is the freindly museum to me. In this vacation it is my fourth time in this museum. My teacher was chinese. Our team was at the third floor.15bilion years afo there was big explde called big bang. About 4.6billion years ago, solar system was made. First when the earth was made magma was floated on the surface of the earh. But eain was come for several years. And magma became coll down and make continent. Steam made clouds. 

 Next, we study about volcano. Volcano is opening crust which eject maga. Magma is ejected when crust is moving. Han peninsula hace Baekdu mountain and Hallamountain.

 At the second flooor I was learn about dinosayr. There were many interesting dinosaurs. Dinosaurs are divided by two kinds. One is carnivore and other is herbivore. Carnivore were ate meat, and herbivore ate plants. There were many dinosayrs such as Tyrannosaurses, Troodons, Acrocanthosaurs and Stefosauruses.

 Most interesting dinosaurs was Troodons. It weighed about 22.7kg and brain weight 37-45kg. It was most advanced brains.

 Our trip was great! Natural History is very interesting. In my house I will review my work!