Earth & Life Science Flashcards
Study of earth, its life-supporting property, materials, & geologic process
Earth Science
The sun encountered a rouge star
Encounter Hypothesis
A comet collided with the sun
Buffon’s Collision Theory
Solar system formed into bodies with nearly-circular orbits because of whirlpool-like motion in pre-solar materials
Descartes’ Vortex Theory
Types of hypotheses on creation
- Catastrophic Hypothesis
- Evolutionary Hypothesis
Catastrophic Hypothesis
The solar system was formed from sudden improbable event
Evolutionary Hypothesis
Formation of solar system was caused by gradual natural changes
The sun & planets formed from rotating disk of dust & gases
Nebular theory
Cloud of gas becomes a planet through condesation during formation of solar system
Protoplanet hypothesis
Planets formed from substance torn out of sun
Tidal Theory
Terrestrial Planets
Small & rocky surface
Jovian planets
larger, low density, all have rings, mostly gas
Accumulation of particles into massive object by gravity
accretion
The widely accepted theory of planet formation
planetesimal hypotheses
planets from dust and combine to make bigger planets
planetesimal hypothesis
