What could trigger the collapse of an interstellar cloud to form protostars quizlet?
What are thought to be some possible causes of triggering the contraction of an interstellar cloud? the cloud become too cold to balance the inward force of gravity. From the release of gravitational energy as the protostar shrinks in stages 2 and 3.
What causes fragmentation in a collapsing interstellar cloud quizlet?
As an interstellar cloud contracts, gravitational instabilities cause it to fragment into smaller pieces. … It prevents the charged particles in the cloud from moving in certain directions and can slow or even halt the gravitational collapse of a molecule cloud.
What four factors cause a cloud of interstellar matter to resist contraction select all that apply?
The stars form from the dust and gas of the interstellar medium. The gravitational attraction in giant molecular clouds makes the cloud contraction when enough mass has accumulated. The gravitational attraction opposes by the magnetic fields, rotation of clouds, thermal energy, and turbulence of the gas.
What triggers the gravitational collapse of material inside a molecular cloud quizlet?
What triggers the gravitational collapse of material inside a molecular cloud? A passing shock wave. What eventually halts the slow contraction of a newly forming star? Nuclear fusion.
What evidence can you cite that the interstellar medium contains both gas and dust quizlet?
What evidence can you cite that the interstellar medium contains both gas and dust? Interstellar medium (The gas and dust distributed between stars). Very hot stars can excite clouds of gas and dust to emit light, and this reveals that the clouds contain mostly hydrogen gas at very low densities.
What changes happened to the cloud from which our solar system formed as it diminished in size due to gravitational collapse?
According to our theory of solar system formation, what three major changes occurred in the solar nebula as it shrank in size? It got hotter, its rate of rotation increased, and it flattened into a disk.
Why does a cloud collapse rapidly at first and then slow down as it gets denser?
6) Why does a cloud collapse rapidly at first, and then slow down as the it gets denser? Answer: The self-gravity causes the cloud to collapse. Gravitational potential energy is turned to heat (through friction) and released as infrared light from the cloud.
Which law best explains why the central regions of the solar nebula got hotter as the nebula shrank in size?
According to our theory of solar system formation, which law best explains why the central regions of the solar nebula got hotter as the nebula shrank in size? … It flattened as a natural consequence of collisions between particles in the nebula.
What is the source of energy as a star evolves from an interstellar cloud to the protostar stage quizlet?
stars form when an interstellar cloud collapses under its own gravity and breaks up into pieces comparable in mass to our sun. heat, rotation, and magnetism all compete with gravity to influence the cloud’s evolution.
Why does fragmentation occur in molecular clouds?
The dense cores that form stars through gravitational collapse are embedded in much larger and more rarefied expanses of gas. How the parent molecular cloud produces its substructure of dense cores is the problem of fragmentation. The traditional view is that the parent cloud breaks apart as it collapses in on itself.
What is the key factor that determines the temperature density radius luminosity?
formation and evolution
| Question | Answer |
|---|---|
| What is the key factor that determines the temperature, density, radius, luminosity, and pace of evolution for a prestellar object? | mass |
| The most abundant substance in a molecular cloud is | H2. |
| Protostars are located on the H–R diagram | above and to the right of the main sequence. |
What happens when an interstellar cloud fragment shrinks quizlet?
What happens when an interstellar cloud fragment shrinks? It first becomes opaque; Density rises; Temperature rises; Pressure rises. … its luminosity decreases, while its temperature increases.
Which concept describes how a molecular cloud spins faster and flattens into a disk?
History of the Nebular Hypothesis:
In this treatise, he argued that gaseous clouds (nebulae) slowly rotate, gradually collapsing and flattening due to gravity and forming stars and planets.
What is interstellar cloud of gas and dust?
An interstellar cloud is generally an accumulation of gas, plasma, and dust in our and other galaxies. … An interstellar cloud is formed by the gas and dust particles from a red giant in its later life.What are the compositions of interstellar clouds?
7 Interstellar Space Applications. The region between the stars contains interstellar clouds composed primarily of dust and gas. Over 100 molecules (neutrals, ions, and radicals), mostly carbon-containing compounds, have been identified in interstellar molecular clouds.
