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Oxygen
Antoine Laurent Lavoisier discovers oxygen -
Atoms combine into molecules
Amadeo Avagadro discoveres that atoms combine into molecules -
Organic Vs. Inorganic
Fredic Voler finds out organic substances can be made from inorganic substances -
Dinosaur
Fossils of five differnt dinosaurs duscovered, introducing scientists to them world wide -
Chemical Structure
August Kekule invents the Chemical Structurem a way to demonstrate hom atoms and molecules worked -
Iguanadon
Scientists give name to the creature whos teeth were found inin fossil form -
Megalosaurous
Megalosaurous name given to creature whos bones were found -
Electron
J. J. Thomson, John S. Townsend and H. A. Wilson do experiments to prove the existance of electrons -
Deep
Richard Uldum discoveres the inner core of the earth -
Alfred
Alfred Vegner find fossils of the same animals on different parts of the world -
Even deeper
Inga layman discoveres the innermost core of the earth by comparing seimagraoh readings -
Start of Life
Stanley Miller discoveres potential for the start of life millions of year ago -
KT Asteroid
Walter Alvarez discovers iridium in clay, and notices that it blankets the entire earth. This led to the discovery of the asteroid that wiped out the dinosaurs -
Geoligists
Geologists detect seismic activity beneath Mt. Stain Helens -
Eruption
Mt. Saint Helens errupta