ERS120H5 Lecture Notes - Lecture 1: Convergent Boundary, Metamorphic Rock, Continental Crust
Document Summary
The blue planet: formaion and structure of earth. Explosion from an ininitesimally small point, producing irregular distribuion of hydrogen, A nebula form from hydrogen and helium and heavier elements let from the big bang, and previous star cycles. The nebula condenses into a swirling disc, which a center ball, the sun". The center begins to get denser and hoter, allowing fusion to occur, and this forms our sun. Then the planatesimals grow and begin to smash into each other, and these collision heat up their center, and also the decay of radioacive elements heat it up. The heaing of the planetesimals help the interior become more molten. Ater the proto earth, it encountered a large collision. This would have shatered the enire to earth and cause the earth we know today, and as well as our moon. This collision forced the less dense materials out of the proto earth and formed the moon.
