https://padlet.com/gina_laffin/s55de6h0qgf1 Record key ideas from the review interactive with your partner en-us 2017-01-04 17:30:39 UTC 2017-01-04 19:28:41 UTC hello@padlet.com https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145355901 Timelines can be used to show relative order between a series of events ranging from youngest to oldest or vise versa. Fossils from billions of years ago become buried within the rock layers to provide evidence for earth's history. ]]> 2017-01-04 19:05:14 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145355901 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145355913 the history of earths past goes very far back throughout the major events and time periods  we can tell this by looking at relative dating by looking at rock layers. ]]> 2017-01-04 19:05:16 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145355913 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145355982 reading the book of the history of earth, it would take one page every 2 minutes and 17,503 years to finish.]]> 2017-01-04 19:05:27 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145355982 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145356429 There is many events that happen through out earths time. ]]> 2017-01-04 19:06:40 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145356429 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145356863 All the events show us connection between each event. 

]]> 2017-01-04 19:07:53 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145356863 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145357150 By looking at events in order,  we can see how some events connect and differ. ]]> 2017-01-04 19:08:32 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145357150 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145357314 The earth's history dates back to around 4.6 billion years ago. The Law of Superposition does not determine the exact age of rocks.]]> 2017-01-04 19:08:58 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145357314 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145357532 Earth is billions of years old, and there were many important time periods and events that happened  during those billions of years that fossils can help us learn more about.]]> 2017-01-04 19:09:35 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145357532 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145358256 2017-01-04 19:11:43 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145358256 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145358426 There are many layers of rock and the layer at the bottom is the oldest rock and the layer at the top is the youngest rock. This is called the Law of Superposition.]]> 2017-01-04 19:12:16 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145358426 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145358521 Fossils buried within the rock layers are evidence for the events that occurred throughout history.]]> 2017-01-04 19:12:35 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145358521 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145358720 The law of Superposition helps us find the Relative dating of rocks in the layers with the oldest on the bottom and the youngest on the top layer.  

]]> 2017-01-04 19:13:18 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145358720 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145359169 Scientists use radiometric dating to find the accurate ages for particular layers of rocks. ]]> 2017-01-04 19:15:05 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145359169 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145359473 rocks can be used as a time line the bottom is oldest top is newest.]]> 2017-01-04 19:16:05 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145359473 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145359765 The lower layers of rock are older and the most recent layers are youngest ]]> 2017-01-04 19:16:58 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145359765 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145360276 By looking at rock layers, we can tell how old fossils are and when they lived. The lower the rock layer is, the older the fossil is and the higher the rock layer is, the younger the fossil is. ]]> 2017-01-04 19:18:41 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145360276 https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145360948 Radiometric dating helps us find a absolute date for the fossils which is a more precise way of finding out when these organisms lived.]]> 2017-01-04 19:20:40 UTC https://padlet.com/gina_laffin/s55de6h0qgf1/wish/145360948