UNIVERSE
SOLAR SYSTEM FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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weakens the magnetic field.
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is increasing the Sun’s diameter.
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is cooling the photosphere.
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is responsible for variations in the sunspot cycle.
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is balanced by the inward gravitational pressure.
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Detailed explanation-1: -the outward pressure of the hot gas inside the Sun balances the inward pull of gravity at every point. this balance is dynamically maintained. an energy balance is also maintained, with the energy produced in the core of the Sun balancing the energy lost from the surface.
Detailed explanation-2: -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.
Detailed explanation-3: -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.
Detailed explanation-4: -why does the sun’s size remain stable? The sun’s size remains stable because it is in gravitational equilibrium-the outward pressure of hot gas balances the inward force of gravity at every point within the Sun.
Detailed explanation-5: -Hydrostatic Equilibrium: In the interior of a star, the inward force of gravity is exactly balanced at each point by the outward force of gas pressure. The mutual gravitational attraction between the masses of various regions within the Sun produces tremendous forces that tend to collapse the Sun toward its center.