What do we mean when we say the Sun is in energy balance?
What do we mean when we say that the Sun is in energy balance? 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 is gravitational equilibrium quizlet?
Gravitational equilibrium. A state of balance in which the force of gravity pulling inward is precisely counteracted by pressure pushing outward. Energy balance.
What is balanced in gravitational equilibrium?
what two forces are balanced in gravitational equilibrium. gravitational equilibrium is a balance b/w the inward pull of gravity & the outward push of internal gas pressure.
Which of the following best explains why the Sun’s luminosity gradually rises over billions of years quizlet?
Which of the following best explains why the Sun's luminosity gradually rises over billions of years? Fusion gradually decreases the number of independent particles in the core, allowing gravity to compress and heat the core, which in turn increases the fusion rate and the Sun's luminosity.
How does the Sun maintain equilibrium?
The structure of the sun adjusts until the gravitational "pull" towards its center is just balanced by the "push" of the gas pressure outward. Fortunately, this results in a very stable state, called hydrostatic equilibrium.
What forces keep the Sun in equilibrium?
However, the Sun is a giant ball of gas, and the pressure to stop collapse must come from within the Sun. In fact, it is thermal and radiation pressures which create an outward expansion force which balances the inward contraction due to the force of gravity. This balance is called hydrostatic equilibrium.
What two forces are balanced in gravitational equilibrium What does it mean for the Sun to be in energy balance?
What does it mean for the Sun to be in energy balance? Gravity and thermal pressure (the heat from fusion in the core causes pressure.) The Sun is not expanding or contracting because the energy from gravity pulling inward is equal to the gas pressure pushing outward. The energy is in equilibrium.
What force balances the Sun’s gravity quizlet?
What two forces are in balance inside the Sun? The Sun's gravity inward and the force of gas pressure pushing outward.
What is meant by the statement that the Sun is in hydrostatic equilibrium?
If the Sun (or a star) is in hydrostatic equilibrium, the Sun (or star) is neither expanding nor contracting; it is sitting nicely in some equilibrium configuration. This means that the forces which control the Sun (or star) are precisely balanced.
What is meant by the Sun’s hydrostatic equilibrium?
The structure of the sun adjusts until the gravitational "pull" towards its center is just balanced by the "push" of the gas pressure outward. Fortunately, this results in a very stable state, called hydrostatic equilibrium.
Which of the following best describes why the Sun emits most of the energy in the form of visible light?
Which of the following best describes why the Sun emits most of its energy in the form of visible light? Like all objects, the Sun emits thermal radiation with a spectrum that depends on its temperature, and the Sun's surface temperature is just right for emitting mostly visible light.
Which of the following is the best answer to the question why does the Sun shine?
Which of the following is the best answer to the question, "Why does the Sun shine?" As the Sun was forming, gravitational contraction increased the Sun's temperature until the core become hot enough for nuclear fusion, which ever since has generated the heat that makes the Sun shine.
What is gravitational or hydrostatic equilibrium in the Sun?
If the Sun (or a star) is in hydrostatic equilibrium, the Sun (or star) is neither expanding nor contracting; it is sitting nicely in some equilibrium configuration. This means that the forces which control the Sun (or star) are precisely balanced. For the Sun (and stars): The Sun is held together by gravity.
What does it mean to say the Sun is in a state of hydrostatic equilibrium?
Hydrostatic equilibrium is the state where the force of gravity pulling inward is balanced by pressure pushing outward. In the core of the Sun, hydrogen is being fused into helium via nuclear fusion. This creates a large amount of energy flowing from the core which effectively creates an outwardpushing pressure.
Is the Sun at equilibrium?
The Sun's interior is in hydrostatic equilibrium.
What two forces are balanced in gravitational equilibrium What does it mean for the Sun to be in energy balance quizlet?
What does it mean for the Sun to be in energy balance? Gravity and thermal pressure (the heat from fusion in the core causes pressure.) The Sun is not expanding or contracting because the energy from gravity pulling inward is equal to the gas pressure pushing outward. The energy is in equilibrium.
When we say the Sun is in hydrostatic equilibrium This means that?
If the Sun (or a star) is in hydrostatic equilibrium, the Sun (or star) is neither expanding nor contracting; it is sitting nicely in some equilibrium configuration. This means that the forces which control the Sun (or star) are precisely balanced.
What do we mean when we say the Sun is in hydrostatic equilibrium?
Hydrostatic equilibrium is the state where the force of gravity pulling inward is balanced by pressure pushing outward. In the core of the Sun, hydrogen is being fused into helium via nuclear fusion. This creates a large amount of energy flowing from the core which effectively creates an outwardpushing pressure.
What is hydrostatic equilibrium quizlet?
What is hydrostatic equilibrium? it is the explanation that: every layer inside of a star must be in a pressure balance between gravity which wants to pull the has inward and some kind of internal pressure which wants to push the gas outward.
What causes hydrostatic equilibrium?
A star's life is a constant struggle against the force of gravity. Gravity constantly works to try and cause the star to collapse. 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.
What is hydrostatic equilibrium in the Sun quizlet?
Hydrostatic Equilibrium. 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.
Which of the following is the best answer to the question why does the Sun shine quizlet?
Which of the following is the best answer to the question, "Why does the Sun shine?" As the Sun was forming, gravitational contraction increased the Sun's temperature until the core become hot enough for nuclear fusion, which ever since has generated the heat that makes the Sun shine.
Which of the following best explains why the Sun’s luminosity?
Which of the following best explains why the Sun's luminosity gradually rises over billions of years? The planets need more and more energy to maintain any life on them as time goes on, and therefore the Sun must bet hotter.
What makes sun shine every day?
The Sun shines by turning hydrogen into helium in its core. This process is called nuclear fusion. Fusion happens when lighter elements are forced together to become heavier elements. When this happens, a tremendous amount of energy is created.
What is the name of the process by which the Sun turns mass into energy?
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.
What do you mean by hydrostatic equilibrium?
In fluid mechanics, hydrostatic equilibrium (hydrostatic balance, hydrostasy) is the condition of a fluid or plastic solid at rest, which occurs when external forces, such as gravity, are balanced by a pressure-gradient force.
What do we mean when we say that the Sun is in gravitational or hydrostatic equilibrium quizlet?
What do we mean when we say that the Sun is in gravitational or hydrostatic equilibrium? There is a balance within the Sun between the outward push of pressure and the inward pull of gravity.
Is the Sun in hydrostatic equilibrium?
The Sun's interior is in hydrostatic equilibrium. Energy is carried away from the Sun's core by radiative diffusion and convection. The Sun's interior can be probed by helioseismology.
What does it mean to say the Sun is in a state of hydrostatic equilibrium quizlet?
What does it mean when we say that the Sun is in a state of hydrostatic equilibrium? It remains constant; and inward gravitational forces are balanced by outward pressure.
What is hydrostatic equilibrium in the atmosphere?
The atmosphere is mainly in hydrostatic balance, or equilibrium, between the upward-directed pressure gradient force and the downward-directed force of gravity.