Question

A main sequence star does not expand or contract due to the balance between the internal heat pushing outward and the weight of the material pressing inward due to gravity. This state of maintaining a constant size is known as:

Choose one • 5 points

hydrostatic equilibrium

thermal equilibrium

dynamic equilibrium

Answer 1

The correct answer is **hydrostatic equilibrium**.

This state refers to the balance between the inward gravitational force and the outward pressure from the heat and energy produced in the star's core, allowing a main sequence star to maintain a constant size.