Why do we experience gravity as an intuitive force?

• Because it only affects large objects

• Because it is a man-made concept

• Because we experience it every second of our lives

• Because it is the strongest force in nature

What did Galileo's experiments demonstrate about gravitational acceleration?

• Heavier objects fall faster than lighter ones

• Gravitational acceleration is the same for all objects

• Objects with more surface area fall faster

• Air resistance does not affect falling objects

What puzzled Newton about his gravitational equations?

• The equations predicted the existence of black holes

• The concept of action at a distance

• The equations did not work for all planets

• The equations were too complex

According to Einstein, what is gravity?

• A force that pulls objects together

• The curvature of space and time

• A mysterious force with no explanation

• An electromagnetic interaction

What is the significance of a supermassive black hole?

• It is a theoretical concept with no evidence

• It is weaker than other gravitational forces

• It is the smallest type of black hole

• It has a mass more than a million suns

How does matter affect space according to general relativity?

• Matter flattens space

• Matter does not affect space

• Matter tells space how to curve

• Matter creates new space

What is the main challenge in unifying gravity with quantum mechanics?

• Gravity is too strong to be unified

• Quantum mechanics does not apply to large scales

• Describing small-scale interactions of gravity

• Gravity is not a fundamental force

What is the weakest of the four fundamental interactions of physics?

• Strong interaction

• Electromagnetic force

• Gravity

• Weak interaction

What is the Planck epoch?

• The time when gravity was the strongest force

• The earliest instance of gravity in the universe

• The period when black holes formed

• The time when the universe stopped expanding

What would a quantum theory of gravity achieve?

• It would prove that gravity does not exist

• It would eliminate the need for general relativity

• It would make gravity the strongest force

• It would unify gravity with other fundamental interactions