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Heinrich Stars&Gals

galaxies and star clusters

QuestionAnswer
Four basic types of galaxy Spiral, Barred Spiral, Elliptical, and irregular
Active Galaxies Galaxies that can be seen or are present in the universe as of right now
Spiral Galaxy Ex: Milky Way and Andromeda Galaxies Generally large, ranging from about 20,000 to about 125,000 light-years in diameter. Disk-shaped Greater concentration of stars near center Arms look like pinwheel
Nucleosynthesis The cosmic formation of atoms more complex than the hydrogen atom.
Barred Spiral Galaxy Curved spiral arms attached to bars. Outer stars move faster than inner ones.
The universe we can observe is finite
Universe began about 12-15 billion years ago
For an incomprehensiblly small fraction of a second, the universe was an infinitely dense and infinitely hot fireball
A peculiar form of energy suddenly pushed out the fabric in space-time in a process called Inflation
In stage two, the universe continued to expand, just not as quickly
During the first seconds the expansion created the most basic forces in nature formed first GRAVITY, then the STRONG NUCLEAR FORCE, followed by the WEAK NUCLEAR FORCE, and ELECTROMAGNETIC FORCE
With a second of time, the universe was now made up of fundamental energy and particles like quarts, electrons, photons, and neutrinos
Nucleosynthesis set in with protons and neutrons beginning to form the nuclei of simple elements --> Hydrogen and Helium
It took 300,000-1 billion years until irregularities in the primordial gas began to form galaxies and early stars out of pockets of gas condensing by virtue of gravity
Edwin Hubble Discovered that galaxies are receding from us in all directions
Hubble's Law galaxies are receding from us at speeds that are proportional to their distances from us. This is comparable to the Doppler Effect.
Cosmic Microwave Background Radiation Remnant of heat from the Big Bang still in the universe
Abundance of light elements Hydrogen, Deuterium, helium, and lithium. Predicts about 1/4 of the universe's mass should be helium
With Omega less than 1, the universe is considered "open" Forever expanding
If Omega is greater han 1 then the universe will contract and eventually collapse Big Crunch
If Omega=1 Universe will become undetectable but won't collapse
Competing Ideas Big Bang Theory, Plasma Theory, Steady State Theory, Inflationary Theory
The universe we can observe is finite
Universe began about 12-15 billion years ago
For an incomprehensiblly small fraction of a second, the universe was an infinitely dense and infinitely hot fireball
A peculiar form of energy suddenly pushed out the fabric in space-time in a process called Inflation
In stage two, the universe continued to expand, just not as quickly
During the first seconds the expansion created the most basic forces in nature formed first GRAVITY, then the STRONG NUCLEAR FORCE, followed by the WEAK NUCLEAR FORCE, and ELECTROMAGNETIC FORCE
With a second of time, the universe was now made up of fundamental energy and particles like quarts, electrons, photons, and neutrinos
Nucleosynthesis set in with protons and neutrons beginning to form the nuclei of simple elements --> Hydrogen and Helium
It took 300,000-1 billion years until irregularities in the primordial gas began to form galaxies and early stars out of pockets of gas condensing by virtue of gravity
Edwin Hubble Discovered that galaxies are receding from us in all directions
Hubble's Law galaxies are receding from us at speeds that are proportional to their distances from us. This is comparable to the Doppler Effect.
Cosmic Microwave Background Radiation Remnant of heat from the Big Bang still in the universe
Abundance of light elements Hydrogen, Deuterium, helium, and lithium. Predicts about 1/4 of the universe's mass should be helium
With Omega less than 1, the universe is considered "open" Forever expanding
If Omega is greater han 1 then the universe will contract and eventually collapse Big Crunch
If Omega=1 Universe will become undetectable but won't collapse
Competing Ideas Big Bang Theory, Plasma Theory, Steady State Theory, Inflationary Theory
The universe we can observe is finite
Universe began about 12-15 billion years ago
For an incomprehensiblly small fraction of a second, the universe was an infinitely dense and infinitely hot fireball
A peculiar form of energy suddenly pushed out the fabric in space-time in a process called Inflation
In stage two, the universe continued to expand, just not as quickly
During the first seconds the expansion created the most basic forces in nature formed first GRAVITY, then the STRONG NUCLEAR FORCE, followed by the WEAK NUCLEAR FORCE, and ELECTROMAGNETIC FORCE
With a second of time, the universe was now made up of fundamental energy and particles like quarts, electrons, photons, and neutrinos
Nucleosynthesis set in with protons and neutrons beginning to form the nuclei of simple elements --> Hydrogen and Helium
It took 300,000-1 billion years until irregularities in the primordial gas began to form galaxies and early stars out of pockets of gas condensing by virtue of gravity
Edwin Hubble Discovered that galaxies are receding from us in all directions
Hubble's Law galaxies are receding from us at speeds that are proportional to their distances from us. This is comparable to the Doppler Effect.
Cosmic Microwave Background Radiation Remnant of heat from the Big Bang still in the universe
Abundance of light elements Hydrogen, Deuterium, helium, and lithium. Predicts about 1/4 of the universe's mass should be helium
With Omega less than 1, the universe is considered "open" Forever expanding
If Omega is greater han 1 then the universe will contract and eventually collapse Big Crunch
If Omega=1 Universe will become undetectable but won't collapse
Competing Ideas Big Bang Theory, Plasma Theory, Steady State Theory, Inflationary Theory
The universe we can observe is finite
Universe began about 12-15 billion years ago
For an incomprehensiblly small fraction of a second, the universe was an infinitely dense and infinitely hot fireball
A peculiar form of energy suddenly pushed out the fabric in space-time in a process called Inflation
In stage two, the universe continued to expand, just not as quickly
During the first seconds the expansion created the most basic forces in nature formed first GRAVITY, then the STRONG NUCLEAR FORCE, followed by the WEAK NUCLEAR FORCE, and ELECTROMAGNETIC FORCE
With a second of time, the universe was now made up of fundamental energy and particles like quarts, electrons, photons, and neutrinos
Nucleosynthesis set in with protons and neutrons beginning to form the nuclei of simple elements --> Hydrogen and Helium
It took 300,000-1 billion years until irregularities in the primordial gas began to form galaxies and early stars out of pockets of gas condensing by virtue of gravity
Edwin Hubble Discovered that galaxies are receding from us in all directions
Hubble's Law galaxies are receding from us at speeds that are proportional to their distances from us. This is comparable to the Doppler Effect.
Cosmic Microwave Background Radiation Remnant of heat from the Big Bang still in the universe
Abundance of light elements Hydrogen, Deuterium, helium, and lithium. Predicts about 1/4 of the universe's mass should be helium
With Omega less than 1, the universe is considered "open" Forever expanding
If Omega is greater han 1 then the universe will contract and eventually collapse Big Crunch
If Omega=1 Universe will become undetectable but won't collapse
Competing Ideas Big Bang Theory, Plasma Theory, Steady State Theory, Inflationary Theory
Inflationary Theory The Inflation Theory proposes a period of extremely rapid (exponential) expansion of the universe during its first few moments.
Problems with Big Bang theory Flatness Problem, Horizon Problem, Monopole problem
Steady State Theory new matter is continuously created as the universe expands, so that the perfect cosmological principle is adhered to
Created by: justinaac
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