Lab Day! Fossils

Geologic Time Scale:
This week I will be taking the time to re-look over the Geologic Time Scale and hope to remember it.  I do not have the time scale fully memorized yet, but this week I plan to look over it and take time to memorize it.  I plan to learn the song from the youtube videos and or attempt to create a mnemonic device to remember it. 

Fossils:
Fossils are composed of animal remains.  They allow us to find old creatures, plants, and tell us about time and what may have happened many years ago. There are also many different types of fossils like: amber, trace fossils, and petrified food.  Fossils are incredible.  Amber is tree sap that is fossilized that can contain particles of insects. Trace fossils are impressions or imprints from animals, or plants.

Here is what I learned from Google and in class:
We can tell the age of fossils through radiometric dating.

Another types of fossils are compressed leaf imprinting, trilobites, molds and casts, carbonization, petrified animals and wood, and whole animals caught in the action.

Fossil Lab 2-27-13

Earlier this week my class made fossils by using plaster and sand.  The easiest fossil to get out was the 25 mL of plaster and 50 mL of sand mixture.  The next one to be the easiest was made of 50 mL plaster and 50 mL of sand.  The hardest fossil mixture to release contained 100 mL of plaster and 26 mL of sand.  Over all the first and easiest fossil mixture left the best impression.