30 Gravitation Quiz Questions and Answers

The history of our understanding of gravitation spans several centuries and involves the contributions of many notable scientists.

(1). Ancient Times
The concept of gravity has been observed and studied since ancient times. Ancient civilizations such as the Greeks and Egyptians had some understanding of gravity, although their explanations were often based on philosophical or mystical ideas rather than scientific principles.

(2). Isaac Newton (1642-1727)
ir Isaac Newton’s work in the late 17th century revolutionized our understanding of gravitation. In 1687, he published his seminal work “Mathematical Principles of Natural Philosophy,” commonly known as the Principia. Newton formulated the law of universal gravitation, which states that every particle of matter in the universe attracts every other particle with a force directly proportional to their masses and inversely proportional to the square of the distance between them. This law provided a mathematical framework for explaining the motion of celestial bodies and objects on Earth.

(3). The Apple Story
One famous anecdote associated with Isaac Newton is the story of an apple falling from a tree, which is said to have inspired his thoughts on gravity. While the exact truth of this story is debated, it serves as a symbol for Newton’s contemplation of the force of gravity.

The history of gravitation demonstrates the progression of human knowledge and scientific discovery, leading to our current understanding of this fundamental force that shapes the motion of celestial bodies and governs our everyday lives.

Table of content

• Part 1: 30 gravitation quiz questions & answers
• Part 2: Download gravitation questions & answers for free
• Part 3: Free online quiz creator – OnlineExamMaker

Part 1: 30 multiple-choice questions along with their respective answers related to gravitation

1. Who formulated the law of universal gravitation?
a) Albert Einstein
b) Isaac Newton
c) Galileo Galilei
d) Johannes Kepler
Answer: b) Isaac Newton

2. What is the force of gravity between two objects proportional to?
a) The masses of the objects
b) The distance between the objects
c) The product of the masses divided by the square of the distance
d) The velocity of the objects
Answer: c) The product of the masses divided by the square of the distance

3. What is the SI unit of gravitational force?
a) Joule
b) Newton
c) Kilogram
d) Meter
Answer: b) Newton

4. Which of the following factors affects the strength of gravitational force between two objects?
a) Mass of one object
b) Mass of the other object
c) Distance between the objects
d) All of the above
Answer: d) All of the above

5. Which scientist proposed the theory of general relativity?
a) Isaac Newton
b) Albert Einstein
c) Galileo Galilei
d) Johannes Kepler
Answer: b) Albert Einstein

6. According to the theory of general relativity, what causes gravity?
a) Mass
b) Energy
c) Curvature of spacetime
d) Electromagnetic force
Answer: c) Curvature of spacetime

7. Which celestial body is responsible for the tides on Earth?
a) Sun
b) Moon
c) Mars
d) Jupiter
Answer: b) Moon

8. What is the approximate acceleration due to gravity on the surface of Earth?
a) 1 m/s^2
b) 5 m/s^2
c) 9.8 m/s^2
d) 12 m/s^2
Answer: c) 9.8 m/s^2

9. What happens to the gravitational force between two objects if the distance between them is doubled?
a) It is halved
b) It is quadrupled
c) It is doubled
d) It remains the same
Answer: a) It is halved

10. Which planet has the highest surface gravity in our solar system?
a) Mercury
b) Venus
c) Earth
d) Jupiter
Answer: d) Jupiter

11. Which of the following is a unit of gravitational potential energy?
a) Joule
b) Newton
c) Kilogram
d) Meter
Answer: a) Joule

12. What happens to the gravitational force between two objects if the mass of one object is doubled?
a) It is halved
b) It is doubled
c) It remains the same
d) It is quadrupled
Answer: b) It is doubled

13. What is the escape velocity?
a) The velocity required to maintain a stable orbit
b) The velocity required to leave the atmosphere of a planet
c) The velocity required for a spacecraft to reach the Moon
d) The velocity of an object at its highest point in a projectile motion
Answer: b) The velocity required to leave the atmosphere of a planet

14. Which of the following is true about gravitational potential energy?
a) It is always positive
b) It is

zero at the highest point of a projectile’s motion
c) It depends on the mass of the object
d) All of the above
Answer: d) All of the above

15. Which scientist first proposed the concept of black holes?
a) Albert Einstein
b) Stephen Hawking
c) Carl Sagan
d) John Michell
Answer: d) John Michell

Part 2: Download gravitation questions & answers for free

16. What is the term for the point in space where the gravitational forces of two objects balance each other?
a) Equinox
b) Equator
c) Equilibrium
d) Equilateral
Answer: c) Equilibrium

17. Which of the following statements is true about gravitational potential energy?
a) It depends on the shape of the object
b) It decreases as the distance between objects increases
c) It increases as the mass of the object increases
d) It is the same as kinetic energy
Answer: c) It increases as the mass of the object increases

18. What is the term for a small, dense celestial object that remains after a massive star undergoes a supernova?
a) Asteroid
b) Meteor
c) Neutron star
d) Red giant
Answer: c) Neutron star

19. Which of the following factors affects the strength of the gravitational field around an object?
a) Mass of the object
b) Distance from the object
c) Shape of the object
d) All of the above
Answer: d) All of the above

20. Which planet has the least amount of gravitational force compared to Earth?
a) Mercury
b) Venus
c) Mars
d) Pluto
Answer: d) Pluto

21. What is the term for the phenomenon where light is bent as it passes through a gravitational field?
a) Reflection
b) Refraction
c) Diffraction
d) Gravitational lensing
Answer: d) Gravitational lensing

22. Which of the following statements is true about the relationship between mass and weight?
a) Mass and weight are the same thing
b) Mass is a measure of the amount of matter, while weight is a measure of the gravitational force acting on an object
c) Mass and weight are inversely proportional to each other
d) Mass depends on the strength of the gravitational field
Answer: b) Mass is a measure of the amount of matter, while weight is a measure of the gravitational force acting on an object

23. Which of the following is responsible for keeping planets in orbit around the Sun?
a) Centrifugal force
b) Electromagnetic force
c) Gravitational force
d) Nuclear force
Answer: c) Gravitational force

24. What happens to the gravitational force between two objects if the mass of both objects is doubled?
a) It is halved
b) It is doubled
c) It remains the same
d) It is quadrupled
Answer: d) It is quadrupled

25. What is the term for the point in space where the gravitational forces of a planet and its moon balance each other, causing tides on the moon?
a) Perigee
b) Apogee
c) Lagrange point
d) Roche limit
Answer: c) Lagrange point

26. Which of the following factors does NOT affect the acceleration due to gravity on the surface of a planet?
a) Mass of the planet

b) Radius of the planet
c) Distance from the planet’s core
d) Altitude above the planet’s surface
Answer: d) Altitude above the planet’s surface

27. What is the term for the force that opposes the motion of objects through a fluid or gas?
a) Inertia
b) Friction
c) Drag
d) Lift
Answer: c) Drag

28. Which of the following statements is true about the gravitational force between two objects?
a) It is always attractive
b) It can be both attractive and repulsive
c) It is always repulsive
d) It depends on the size of the objects
Answer: a) It is always attractive

29. What is the term for the point in an object’s trajectory where it is closest to the body it is orbiting?
a) Apogee
b) Perigee
c) Aphelion
d) Perihelion
Answer: b) Perigee

30. Which of the following factors does NOT affect the gravitational force between two objects?
a) Mass of one object
b) Mass of the other object
c) Distance between the objects
d) Charge of the objects
Answer: d) Charge of the objects

Part 3: Free online quiz creator – OnlineExamMaker

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