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What occurs that causes a main sequence star to lose its equilibrium and move on to the next stage in its evolution?
Wiki User
∙ 9y ago
This happens when a main sequence star uses up all of its fuel and swells. Next stage: Red Giant.
Wiki User
∙ 9y ago
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Which type of nebulae formation occurs after a main sequence star casts of its outer layers?
planetary
Which type of nebulae formation occurs after a main sequence star casts off its outer layers?
A Planetary Nebula. See related question.
When do you say that a star is born?
A star is "born" when the compression of the surrounding hydrogen and other gases has compressed the core of a protostar to about 10 millionoK when nuclear fusion occurs. The star is now on the main sequence and is classified as a star
When a star's inward gravity and outward pressure are balance the star is said to be?
Hydrostatic equilibrium occurs when compression due to gravity is balanced by a pressure gradient which creates a pressure gradient force in the opposite direction. The balance of these two forces is known as the hydrostatic balance.
Why does expansion happen?
Expansion occurs when a substance is heated. The energy given to the molecules in the substance causes them to vibrate and so they get pushed further apart, causing the substance to expand.
What is evolution that occurs in short rapid bursts?
Punctuated equilibrium
How the gradualism model of evolution differs from the punctuated equilibrium model of evolution?
The gradualism model of evolution states that change occurs gradually over time. On the other hand, the punctuated equilibrium model states that change occurs suddenly or rapidly.
The theory that evolution occurs during short periods of rapid change is puntuated?
Punctuated equilibrium.
The concept that evolution occurs over long periods of stability that are interrupted by geologically brief periods of change is known as?
punctuated equilibrium
What is the name of the hypothesis that evolution occurs at an irregular rate through geologic time?
That theory is called punctuated equilibrium.
What is the hypothesis that evolution occurs with periods of drastic change folled by periods of very little change?
punctuated equilibrium
What is the name of the hypothesis that suggests that evolution occurs at a slow constant rate?
Others have said twice: it is called Punctuated Equilibrium.
How does the punctuated equilibrium model of evolution states that evolution occurs rapidly?
Gradualism is the theory that evolution occurs slowly and consistently along periods of time. On the other hand, punctuated equilibrium is the theory that evolution does not occurs for long periods of time and then suddenly evolves rapidly in a small short period of time.
What is the nongradual evolutionary changes in organisms?
The punctuated equilibrium model of evolution holds that evolution occurs in spurts, with species evolving relatively rapidly, and then remaining unchanged for long periods.
Why are fossils of intermediate life forms likely to be rare if the pattern of punctuated equilibrium explains how evolution occurs?
Intermediate species forms, yes. A the taxa level, no. Still, not all taxa evidence is supportive of punctuation and stasis. Punctuated equilibrium is only one explanation of how evolution occurs in some species, not all species. The little shellies evidence gradualist processes very well.
The theroy that evolution occurs slowly but steadily?
No, it happens in small leaps. This is called punctuated equilibrium. Gradualism is actually the answer to the question though punctuated equilibrium is also another tempo of evolutionary change.
What do gradualism and punctuated equilibrium have in common?
Punctuated equilibrium is commonly contrasted against phyletic gradualism, the belief that evolution generally occurs uniformly and by the steady and gradual transformation of whole lineages (called anagenesis). In this view, evolution is seen as generally smooth and continuous.
