Multiple choice

Which of the following keeps planets of the solar system in orbit around the sun?

  1. Electromagnetic energy

  2. Atmospheric pressure

  3. Thermal energy

  4. Gravitational force

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gravitational force is the attractive force between any two masses. The immense mass of the Sun exerts a strong gravitational pull that keeps the planets continuously falling toward it, resulting in stable elliptical orbits.