Origin and Structure of The Earth Flashcards
Big Bang Theory
- Alexander Friedman
- George Lemaitre
Due to a random fluctuation.
Inflation Theory
Exponential expansion of the universe prior to the more gradual big bang expansion.
•Flatness
•Monopole
•Horizon
String Theory
String theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings. It describes how these strings propagate through space and interact with each other.
M Theory
Result of a contact of 2 hyperdimensional branes
Descartes Vortex Theory
whirlpool like motion
Buffon’s Collision Theory
collision of the sun with a giant comet
Kant-Laplace Nebular Hypothesis
a nebula begun to collapse bc of gravitational pull. as the cloud contracted it spins more rapidly.
Jeans-Jeffrey’s Tidal Hypothesis
planets were formed from the substance that were torned out of the sun
Inner Core
hottest part of earth
Lithosphere
top part
made out of dense rock iron and nickel
Asthenosphere
bottom part
plastic like fluid
Oceanic Crust
71%
sedimentary and basalt rocks
Continental Crust
29%
igneous rocks
Ptolemy
Geocentric Model
Nicolaus Copernicus
Heliocentric