Making fossils

What is a fossil?
A fossil has 2 requirements.
1. It has to be to be the remains of a once living organism.
2. It has to be 5,000+ years old

Our ingredients to make a fossil
1 lb bag of plaster pairs
1.5 cups of water
150 mL of sand
large cup to mix in
Cups that come off easy to make the fossils in
Shells (To fossilize)
And a whole lot of Love and fun!

The Outcome!
Well, they didn't turn out so hot. We got some small half pieces but they are a little lame. Our Mix seemed very chalky, they cam out easy, but with sub par impressions. The group that got good impressions used about 1:1 sand to plaster they added water as needed. They also used bigger shells that were easier to find and break out. SCIENCE!

Relative Dating

What do you know about RD?
Relative dating, to the best of my knowledge is using rocks and ice pack to determine the age of something. I have mostly heard it being used with rocks to determine the age of the earth.

We Discussed
Stenos principals of continuity.