GEOL 303 Lecture Notes - Lecture 2: Martian Meteorite, Stanley Miller, Plate Tectonics
Document Summary
Time and space could not have existed before this (einstein) We have the capability through technology to find the date. Can assume for all the other planets, unless there was something that happened. Primitive life, scarce amount of life, single unit organisms. Produced oxygen, and then produced enough into the atmosphere. Martian meteorites hit earth often since mars is close by. Early atmosphere (co2 + h2o + ch4 + nh3) + electricity = amino acids. Amino acids are not life, but are necessarily to produce protein. We have not proved or disproved it, still testing it. Internal energy - energy that occurs within the earth. External energy - energy that occurs on the surface of the earth. Impact energy - impact of objects in our solar system that have hit our earth over time. Most impacts occurred in the earth"s early evolution. When these impacting bodies hit our earth, the greater the gravitational pull and the larger the earth becomes.
