https://padlet.com/xfarmer/exitslip What is used to help us infer about the relative age of rocks and fossils? What are 3 things you learned, 2 questions you have and 1 thing you want to share with me about your learning. en-us 2017-03-28 14:22:17 UTC 2025-10-12 09:58:46 UTC hello@padlet.com https://padlet.com/xfarmer/exitslip/wish/163146481 The fossil that's on the bottom is the oldest in the rock layer. 
We learned today that according to the the law of superposition that in the rock layers that are present the layer at the bottom is normally the oldest layer because of relative aging.
One thing we want to know is if when you have to diagrams or experiences that are the same then how to you pick out the differences between the type of intrusions occurring between the two]]> 2017-03-28 14:35:58 UTC https://padlet.com/xfarmer/exitslip/wish/163146481 https://padlet.com/xfarmer/exitslip/wish/163146699 2017-03-28 14:36:29 UTC https://padlet.com/xfarmer/exitslip/wish/163146699 https://padlet.com/xfarmer/exitslip/wish/163146712 We learned to identify which layers are young & old, about intrusions, and creatures such as the Archaeopteryx.]]> 2017-03-28 14:36:31 UTC https://padlet.com/xfarmer/exitslip/wish/163146712 https://padlet.com/xfarmer/exitslip/wish/163146760 We learned that The highest layer of rocks is the youngest and the lowest layer is the oldest, people have to dig farther down to find older rocks, and that the trilobites were extinct 245 million years ago.

why when people dig underground, you will always find sand?
how do people tell how old bones are?

]]> 2017-03-28 14:36:38 UTC https://padlet.com/xfarmer/exitslip/wish/163146760 https://padlet.com/xfarmer/exitslip/wish/163146784 We learned , the oldest rock layer is all the way at the bottom , if there not horizontal to each other , we cannot use it as evidence. 
We can found out about the animals there before us. ]]> 2017-03-28 14:36:41 UTC https://padlet.com/xfarmer/exitslip/wish/163146784 https://padlet.com/xfarmer/exitslip/wish/163146787 The Fossils had ages of when they was put on this l]]> 2017-03-28 14:36:42 UTC https://padlet.com/xfarmer/exitslip/wish/163146787 https://padlet.com/xfarmer/exitslip/wish/163146814 2017-03-28 14:36:44 UTC https://padlet.com/xfarmer/exitslip/wish/163146814 https://padlet.com/xfarmer/exitslip/wish/163146855 Earths oceans come and go because of the geologic time.
After the lava flow, more layers of rock are added or removed.]]> 2017-03-28 14:36:49 UTC https://padlet.com/xfarmer/exitslip/wish/163146855 https://padlet.com/xfarmer/exitslip/wish/163146899 We can use fossils and the rock layers that are below us. We learned what order animals came in from trilobites to humans now.

We learned how to find the order of paths walked by animals before us. How do they know the exact age of animals before. how do they get that deep to get those fossils]]> 2017-03-28 14:36:54 UTC https://padlet.com/xfarmer/exitslip/wish/163146899 https://padlet.com/xfarmer/exitslip/wish/163146992 sarriya :i learned about different types or rocks (fossils)

]]> 2017-03-28 14:37:05 UTC https://padlet.com/xfarmer/exitslip/wish/163146992 https://padlet.com/xfarmer/exitslip/wish/163147414 we learned that fossils are based on how they are formed. Trilobites are organism prevented from dying by being trapped in amber, tar, etc.. mold fossils are formed when an organism are changed to rock, decays leaving a shape of an organism. 1. ]]> 2017-03-28 14:38:09 UTC https://padlet.com/xfarmer/exitslip/wish/163147414 https://padlet.com/xfarmer/exitslip/wish/163147519 By the layer and its order]]> 2017-03-28 14:38:23 UTC https://padlet.com/xfarmer/exitslip/wish/163147519 https://padlet.com/xfarmer/exitslip/wish/163147578 Well our earth layers are based on their age and what type of fossils are found in there

We learned today that the crater that destroyed dinosaurs was found in Mexico

We want to know how did the crater kill all of the dinosaurs]]> 2017-03-28 14:38:31 UTC https://padlet.com/xfarmer/exitslip/wish/163147578 https://padlet.com/xfarmer/exitslip/wish/163147685 We learned Different Fossil rocks, and how Crinoids attach them selves to rocks in the bottom of the ocean. ]]> 2017-03-28 14:38:45 UTC https://padlet.com/xfarmer/exitslip/wish/163147685 https://padlet.com/xfarmer/exitslip/wish/163147768 I learned a layers and how they are placed and fossils and rocks ]]> 2017-03-28 14:38:57 UTC https://padlet.com/xfarmer/exitslip/wish/163147768 https://padlet.com/xfarmer/exitslip/wish/163147840 By the layer and the order

]]> 2017-03-28 14:39:06 UTC https://padlet.com/xfarmer/exitslip/wish/163147840 https://padlet.com/xfarmer/exitslip/wish/163148184 The Fossil had an age when they were put on this land and we learned that rocks can transfer to be in different layers]]> 2017-03-28 14:39:47 UTC https://padlet.com/xfarmer/exitslip/wish/163148184 https://padlet.com/xfarmer/exitslip/wish/163148763 2017-03-28 14:41:13 UTC https://padlet.com/xfarmer/exitslip/wish/163148763 https://padlet.com/xfarmer/exitslip/wish/163149289 Your information is true and the specific details you put were on point.]]> 2017-03-28 14:42:32 UTC https://padlet.com/xfarmer/exitslip/wish/163149289 https://padlet.com/xfarmer/exitslip/wish/163155035 2017-03-28 14:57:28 UTC https://padlet.com/xfarmer/exitslip/wish/163155035 https://padlet.com/xfarmer/exitslip/wish/163155536 Each layer is lay on top of a older one. Of course this takes a very long time.

Fossil can come in many way:

A fossil that traps the organisms and preserved it is very rare

Fossils can be just a footprint and not just bones

Fossil record is the age of the fossil]]> 2017-03-28 14:58:55 UTC https://padlet.com/xfarmer/exitslip/wish/163155536 https://padlet.com/xfarmer/exitslip/wish/163166285 The fossils at the bottom are older and the fossil toward the surface are newer.]]> 2017-03-28 15:27:47 UTC https://padlet.com/xfarmer/exitslip/wish/163166285 https://padlet.com/xfarmer/exitslip/wish/163172213 It's the order of the layers.
We learned about the different type of fossils, layers, and interventions. We also learned the bottom layers are older than the top. Are there shorter names for these fossils? And how old is the oldest fossil ever?]]> 2017-03-28 15:44:12 UTC https://padlet.com/xfarmer/exitslip/wish/163172213 https://padlet.com/xfarmer/exitslip/wish/163172247 we have learned that today that there are many different types of rocks that have fossils and sediment materials in it . i have learned the difference in the strata. also that the oldest fossils are at the bottom and the youngest at the top . i want to know if there are any multiplies of the fossils but different and where it can be found . i want to share with you the ]]> 2017-03-28 15:44:17 UTC https://padlet.com/xfarmer/exitslip/wish/163172247 00036132 https://padlet.com/xfarmer/exitslip/wish/163172259 I learned that the colors of rocks and the layers could help you figure out which is the oldest or the youngest. I learned that the the fossils at the bottom is the oldest. I learned that the fossils at the top is the youngest.]]> 2017-03-28 15:44:19 UTC https://padlet.com/xfarmer/exitslip/wish/163172259 https://padlet.com/xfarmer/exitslip/wish/163172273 I learned that the things at the bottom were older than the things on the top, that one organism could determine were and when everything in that placed lived also. How long did it take for people to find that crater that ended the dinosaurs. Why were the father and son looking for that element. 
 ]]> 2017-03-28 15:44:21 UTC https://padlet.com/xfarmer/exitslip/wish/163172273 https://padlet.com/xfarmer/exitslip/wish/163172289 We learned that you determine the relative age of Earth's layers by looking at the fossils in the layers and the order of the layers. We also learned that faults cause the layers to be uneven, and we learned that magma can create a whole new layer.]]> 2017-03-28 15:44:25 UTC https://padlet.com/xfarmer/exitslip/wish/163172289 https://padlet.com/xfarmer/exitslip/wish/163172352 We learned that you can tell the age of the rock by the order and the types of fossils found in it. And that ]]> 2017-03-28 15:44:35 UTC https://padlet.com/xfarmer/exitslip/wish/163172352 https://padlet.com/xfarmer/exitslip/wish/163172461 2017-03-28 15:44:51 UTC https://padlet.com/xfarmer/exitslip/wish/163172461 00028095 https://padlet.com/xfarmer/exitslip/wish/163172623 We learned about the different layers and what order they come in 

]]> 2017-03-28 15:45:15 UTC https://padlet.com/xfarmer/exitslip/wish/163172623 10037455 https://padlet.com/xfarmer/exitslip/wish/163172700 You can tell that age of the rocks based on the order of the layers.
I learned how intrusion happens.]]> 2017-03-28 15:45:30 UTC https://padlet.com/xfarmer/exitslip/wish/163172700 https://padlet.com/xfarmer/exitslip/wish/163172778 I learned that the layers can be very confusing.
Also that the intrusions can be very large.
One question is why do we need to know this.]]> 2017-03-28 15:45:42 UTC https://padlet.com/xfarmer/exitslip/wish/163172778 https://padlet.com/xfarmer/exitslip/wish/163172912 We learned that layers are difficult to understand and about the Law of Superposition.]]> 2017-03-28 15:46:02 UTC https://padlet.com/xfarmer/exitslip/wish/163172912 https://padlet.com/xfarmer/exitslip/wish/163173679 2017-03-28 15:48:16 UTC https://padlet.com/xfarmer/exitslip/wish/163173679 https://padlet.com/xfarmer/exitslip/wish/166789123 Something I learned today is what the future time era will be called.]]> 2017-04-18 15:23:17 UTC https://padlet.com/xfarmer/exitslip/wish/166789123 https://padlet.com/xfarmer/exitslip/wish/168712951 I learned that the different layers have different parts. And sometimes there can be intrusions, erosion, shifts tilts.]]> 2017-04-27 17:46:51 UTC https://padlet.com/xfarmer/exitslip/wish/168712951