Question 1 Unsaved

Sun 101 - Which two complementary forces keep the Sun from blowing itself up?

Question 1 options:

fusion and magnetism

helium and hydrogen

photons and magnetism

fusion and gravity

Fusion and gravity is ur answer

The correct answer is:

fusion and gravity

In fact:

- Nuclear fusion: the fusion of lighter nuclei into heavier nuclei release large amounts of energy, and this energy "pushes" outwards the star, balancing the gravitational force

- Gravity: the Sun has a huge mass, so there is a strong gravitational force pushing towards the centre of our star. Without the action of the nuclear fusion, the star would collapse due to the effect of the gravity.