What does it mean when the Sun is in hydrostatic equilibrium?
What does it mean when the Sun is in hydrostatic equilibrium?
When the force due to pressure exactly balances the force due to gravity, a system is in hydrostatic equilibrium. The Sun’s hydrostatic equilibrium is stable and self-regulating; if you tossed a little extra matter onto the Sun, the inward force of gravity would increase.
When a star like the Sun is in hydrostatic equilibrium?
Terms in this set (30) A star is in hydrostatic equilibrium when the outward push of pressure due to core burning is exactly in balance with the inward pull of gravity. When the hydrogen in a star’s core has been used up, burning ceases, and gravity and pressure are no longer in balance.
What happens when a star reaches hydrostatic equilibrium?
Explanation: When a star, of any size, is in hydrostatic equilibrium it means that gravity which is trying to collapse the star is balanced by pressures generated by fusion reactions in the core. Hence any star in hydrostatic equilibrium is stable.
When a star like the Sun is in hydrostatic equilibrium What two things must be in balance quizlet?
A star is in hydrostatic equilibrium when the outward push of pressure due to core burning is exactly in balance with the inward pull of gravity. When the hydrogen in a star’s core has been used up, burning ceases, and gravity and pressure are no longer in balance. This causes the star to undergo significant changes.
What do we mean when we say that the Sun is in gravitational equilibrium or hydrostatic equilibrium )? Group of answer choices?
What do we mean when we say that the Sun is in hydrostatic equilibrium (also called gravitational equilibrium by some)? There is a balance within the Sun between the outward push of pressure and the inward pull of gravity. Why do sunspots appear dark in pictures of Sun?
How do we know the Sun is in hydrostatic equilibrium quizlet?
The structure of the Sun is a matter of balance between the pressure outward and the force of gravity inward: this balance is known as hydrostatic equilibrium. The pressure results from energy finding its way to the surface of the Sun from deep in its interior.
What is hydrostatic equilibrium astronomy?
An astronomical body is in a state of hydrostatic equilibrium (HE) when its self gravitational force is balanced by its internal pressure; the body is neither expanding nor contracting.
What do we mean when we say that the Sun is in gravitational equilibrium?
What do we mean when we say that the Sun is in gravitational equilibrium? There is a balance within the Sun between the outward push of pressure and the inward pull of gravity. The amount of energy released by fusion in the Sun’s core equals the amount of energy radiated from the Sun’s surface into space.
What happens when Sun runs out of hydrogen?
When our Sun runs out of hydrogen fuel in the core, it will contract and heat up to a sufficient degree that helium fusion can begin. It will end composed of carbon and oxygen, with the lighter (outer) hydrogen and helium layers blown off. This occurs for all stars between about 40% and 800% the Sun’s mass.
How does hydrostatic equilibrium relate to hot air ballooning?
This balance is called hydrostatic equilibrium. A star is like a balloon. In a balloon the gas inside the balloon pushes outward and the elastic material supplies just enough inward compression to balance the gas pressure.
During which stages of a stars life is the star in hydrostatic equilibrium?
Sample parameters
| Stellar class | Radius, R/ R ☉ | Temp. (K) |
|---|---|---|
| F5 | 1.2 | 6,540 |
| G0 | 1.05 | 5,920 |
| G2 | 1 | 5,780 |
| G5 | 0.93 | 5,610 |
What takes place during the fusion reactions in the core of the sun?
In the core of the Sun hydrogen is being converted into helium. This is called nuclear fusion. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.
