Earth and Science Flashcards
The three Origin of the Universe
- Big Bang Theory
- Steady State Theory
- Pulsating Theory
Who is the father of the Big Bang Theory?
George Lemaitre
He was an early advocate and developer of Lemaître’s Big Bang theory.
(Universe Expansion)
George Gamow
Earth is assumed to be at the center of it all.
Geocentric Model
The planet Earth was the center of the universe and all of the other planets, stars, and the Sun revolved, or circled, around it.
Ptolemaic Model
Earth and Planets revolve around the Sun.
Heliocentric Model
He created the theory of Heliocentric which means, Earth and Planets revolve around the Sun.
Nicolaus Copernicus
He made accurate observations of the stars and planets.
Tycho Brahe
He discovered that the earth and planets travel about the sun in elliptical motion.
Johannes Kepler
He gave 3 fundamental laws of planetary motion. (Law of Motion)
Johannes Kepler
It formed about 380,000 years after the Big Bang and imprinted on it are -traces of the seeds- from which the stars and galaxies we can see today eventually formed.
Cosmic Microwave Background (CMB)
The 5 Celestial Bodies
- Stars
- Planets
- Comets
- Meteoroids
- Satellite
Collapse under the force of gravity. (Dust, Clouds)
Nebula Clouds
Dust and Gasses
Nebula
A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
Galaxy
Located in the Milky Way Galaxy
The collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets. The planets of the solar system are (in order of distance from the sun) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
Solar System
From the Origin of Universe:
Cyclic Event (the universe goes through regular cycles of expansion and destruction.)
Continues expansion and contraction in universe.
Pulsating Theory
Is an all space-time, matter and energy including the solar system, all stars and galaxies and content of intergalactic space, regarded as a whole.
Universe
From the Origin of Universe:
Continues expansion and contraction in universe.
Pulsating Theory
From the Origin of Universe:
Explode and expand again
Pulsating theory
Origin of the Universe:
It states that the counting of the galaxies in our universe is constant and new galaxies which are forming continuously are filling the empty spaces which are created by those heavenly bodies which have crossed the boundary lines of observable Universe.
Steady State Theory
Origin of the Universe:
This theory proposes that the overall structure of the universe is always the same at any point in time and space. This structure is maintained even when certain events, such as birth of new stars, occur. It is balanced by the death of old stars.
Steady State Theory
Origin of the Universe:
It proposes that the entire universe was once condensed in a very small and compact particle called primeval nucleus.
Big Bang Theory
Origin of the Universe:
It is estimated about 20 billion years ago, primeval Nucleus suddenly exploded in a big bang.
The force of this explosion caused matter to scatter in any direction forming a universe.
Big Bang Theory
