Create+a+timeline+of+the+Earth

Our planet Earth formed about 4.5 billion years ago. That’s a really, really long time ago! To help picture it, imagine the entire history of the Earth squeezed into just twelve hours, from noon to midnight. When we think of time in this way, humans have only been around for about a minute! To describe Earth’s vast history, scientists use a geologic timescale. They divide it into long segments of time called eras. Each era is further divided into periods. Earth events and organisms characterize each era and period. For example, the Mesozoic Era starts after an extinction event that wiped out almost 90% of species on Earth. Dinosaurs then flourished until the end of the Mesozoic Era, which is marked by another major extinction event. Most dinosaurs went extinct but one group of dinosaurs—birds—survived. Tips:
 * __Create a timeline of the Earth __**
 * Working individually **, you will create a poster presentation of the History of the Earth. You can use worksheets, library resources, as well as the Internet to research the following information:
 * 1) Landmasses What did the surface of the Earth look like? Illustrate the arrangement of landmasses and/or continents. Orogenies and movement of continents.
 * 2) Most important events (living beings)
 * __Completion time: 2 weeks __**
 * In your presentation mark the span of each period
 * **Include photographs of plant and animal fossils ** of organisms that lived during the different periods.