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

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.

Fusion and gravity is ur answer