Gravity and Its Role in the Universe MCQs

1. What is gravity?
(A) A type of energy
(B) A magnetic force
(C) A force that attracts two bodies toward each other
(D) A repulsive cosmic force

2. Who formulated the law of universal gravitation?
(A) Albert Einstein
(B) Galileo Galilei
(C) Stephen Hawking
(D) Isaac Newton

3. What happens to gravitational force when the distance between two objects increases?
(A) It increases
(B) It stays the same
(C) It decreases
(D) It becomes infinite

4. What celestial body’s gravity keeps the planets in orbit around it?
(A) Earth
(B) The Moon
(C) The Sun
(D) Jupiter

5. Which theory explains gravity as a curvature of space-time?
(A) Newtonian Mechanics
(B) Quantum Theory
(C) General Relativity
(D) Special Relativity

6. Why do astronauts in orbit appear weightless?
(A) There is no gravity in space
(B) They are far from Earth’s gravity
(C) They are in free fall around Earth
(D) Their suits cancel gravity

7. What factor does NOT affect gravitational force between two objects?
(A) Mass of the objects
(B) Distance between the objects
(C) Temperature of the objects
(D) Presence of other nearby objects

8. What is the acceleration due to gravity on Earth’s surface?
(A) 8.9 m/s²
(B) 10.8 m/s²
(C) 9.8 m/s²
(D) 7.8 m/s²

9. Which planet in our solar system has the strongest surface gravity?
(A) Earth
(B) Jupiter
(C) Mars
(D) Saturn

10. How does gravity influence the formation of stars and galaxies?
(A) It pushes matter apart
(B) It stabilizes nuclear fusion
(C) It pulls matter together to initiate formation
(D) It reduces the temperature of gases