Geologic time scale activity

Link:https://docs.google.com/drawings/d/1_dq5zUFJyEbQuvTwB-dHqcST_QNHvAkehR2xClZ0yqc/edit

Through putting events of earth together into the timeline, I learned the general chronological order of earth's history. Earth was formed around 4.6 billions years ago. All I knew about the Earth's history was formation of earth and when does ice age began. By this activity, I learned new terms such as an Archeon Eon, Proterozoic Eon, and Ordovician Period. All those terms are new to me and made me interested in Earth's History. While I was looking at many events, of course Origin of Earth was the most familiar term to me. For this activity, all we do was putting events in order. However, I wanted to know specific species of animals that lived in the earth at each period because I'm interested in animals and their physical features. 


I compared earth's history as an life of a newborn infant. They are first formed inside of their mother's uterus, I think it can be compared with the event that single cell microorganisms first appeared on the earth. When baby is born and first hair grow up on their head, it can be the time when the first plants appeared on land. When they started to walk, it is the time when the first land vertebrates and the amphibians appeared. When they are able to talk, this is the start of precambrian times. I compared the start of precambrian times as when babies started to talk because it is really important moment when human started to communicate. I condensed the earth's history into few events that I think it is important and compared to formation of baby until they started to talk. The point is to figure out and understand the general flow of earth's history easily.