For my fourth blog post I am doing a project on the prehistoric earth, when earth was so alike with the other planets in our solar system. Through time the earth has changed from being a giant ball of meteors that had collided with eachother, but today we have
developed so much creating life amongst trees and and animals.
Scientists today are using the imprints of raindrops of 2.74 billion years ago to see what the atmosphere was like on early earth. The are doing it by looking at the depressions rain drops left as they fell 2.7 billion years ago and calculated how fast they were going as they impacted the ground, this process would allow scientists to figure out the density of air in Ancient times.
Earth as we know today is very different then the earth 2.7 billion years ago. Our earth back then spun much faster, the moon was closer and the sun was a lot weaker. There wasn’t even animals or planets and the air wasn’t breathable.
Fossil rain drops are basically just pits in the surface of a rock that had started out as a volcanic ash fall. Rain that tumbled on the ash would dig out small depressions, which was then covered by more ash deposits, or lithified or it turned to stone. We only see these imprints today because the top layers of rocks have been eroded off.
We should care about this subject because its interesting and its about our planet, the big giant round thing that we live, and survive on. We should learn the changes our planet had faced and see what kind of a future it could have and if possibly in the future there wouldn’t be oxygen, and what we could prevent to stop it.
My opinion on this subject, is that its interesting and I’m excited that our generation has learned time travel through science! I think everyday we are furthering ourselves in education and its doing us good and our planet good. I am glad they are doing this project.
The earth wasn’t a giant ball of snow back then, but neither was it cold, the earth was fairly colder than today due to the sun being 70% less as strong as it is today. The earth was basically just oceans and rocks, as well as other landscapes.