What balances the force of gravity in a star?

What balances the force of gravity in a star?

Inside a star, the inward force of gravity is balanced by the outward force of pressure. The star is stabilized (i.e., nuclear reactions are kept under control) by a pressure-temperature thermostat.

Which two forces must be in balance to keep a star in equilibrium?

Stars live out their lives in an exquisitely detailed equilibrium, or balance, between two powerful forces — outward pressure and the inward pull of gravity. The gravity force is a property of the mass of the star, and in order to support itself against gravity the star generates energy in its core.

What two forces are necessary for a star to remain stable?

You can imagine a star as a series of layers. The inward force of gravity is balanced out by the outward force of pressure to keep the star stable. This stable balance, the outward pressure of hot gases balancing the inward pull of gravity is called the hydrostatic equilibrium.

What are the forces within and outside a star that keep it stable?

While self-gravity pulls the star inward and tries to make it collapse, thermal pressure (heat created by fusion) pushes outward. These two forces cancel each other out in a main sequence star, thus making it stable.

What forces act on a star?

Pressure and gravity. Pressure due to fusion reactions pushes outwards. Gravity pulls inwards to keep the star in equilibrium.

What keeps a star stable?

During the main sequence period of its life cycle, a star is stable because the forces in it are balanced. The outward pressure from the expanding hot gases is balanced by the force of the star’s gravity. Gravity pulls smaller amounts of dust and gas together, which form planets in orbit around the star.

What two forces are in a star?

Gravitational forces act to contract the star. Fusion reactions and heat convection act to expand the star. The two forces are balanced and the star remains stable in size and reactions.

What is star stability?

A star’s stability is a balance of forces and properties, including gravity, density, temperature and. pressure. The problem was about describing the stability of star depending on its mass & elements. There are two opposing forces namely outward pressure due to heat that is produced basically when.

What are the outward forces that act on a star What are the inward forces How do these compare?

the outward force that acts on a star is thermal pressure. the inward force that acts on a star is gravity.

What is the force that keeps a main sequence star from blowing apart what is the force that keeps a main sequence star from blowing apart?

Nuclear reactions begin in the core by stage 4. What is the force that keeps a main sequence star from collapsing on itself? radiation pressure.

What are the three forces involved in star formation?

But three forces counteract gravity and tend to prevent this collapse:

• Inertia: massive objects resist changes of their motion.
• centrifugal force: The central cloud will form a star, and planets will form in the disk.
• fission: into two clouds orbiting each other.
• Heat pressure:
• Magnetic pressure:

What forces hold a star together in stellar equilibrium?

A star is in equilibrium when the pressures inside the star balance out the force of gravity. The pressure is thermal pressure resulting from the fusion reactions taking place in the star’s core. A star stays in equilibrium until the supply of hydrogen in the core is depleted.

How is the force of gravity balanced in a star?

You can imagine a star as a series of layers. The inward force of gravity is balanced out by the outward force of pressure to keep the star stable. This stable balance, the outward pressure of hot gases balancing the inward pull of gravity is called the hydrostatic equilibrium.

Why is the core of a star called hydrostatic equilibrium?

The star’s core, however is very hot which creates pressure within the gas. This pressure counteracts the force of gravity, putting the star into what is called hydrostatic equilibrium. A star is okay as long as the star has this equilibrium between gravity pulling the star inwards and pressure pushing the star outwards.

What makes the inner core of a star stable?

This, by extension, means that the temperature and density of a gas in that layer has to be higher as well. This means that for a star to be stable, a star’s inner core must have a high temperature, density, and pressure to support its own weight. This is easy to remember.

What makes a star have an inner peace?

You might be thinking that my use of the term ‘inner peace’ is just a cute metaphor but actually, the inner core of a star plays a big role in this equilibrium. A star’s stability is a balance of forces and properties, including gravity, density, temperature, and pressure.