Understanding the Speed of Light and Causality

What is the primary reason the universe maintains a constant speed of light?

• To keep the universe from expanding

• To maintain the speed of causality

• To ensure photons travel at a fixed speed

• To prevent time travel

What was Galileo's lesser-known contribution to physics?

• The theory of gravity

• The principle of relativity

• The concept of spacetime

• The speed of light

What did Maxwell's equations challenge in the 1800s?

• The concept of spacetime

• Newton's laws of motion

• Galilean relativity

• The theory of gravity

Why can't Maxwell's equations be consistent under the Galilean transformation?

• They are based on incorrect assumptions

• They are only applicable at low speeds

• They assume infinite speed of light

• They don't account for gravity

What transformation correctly describes the relationship between space and time?

• Galilean transformation

• Lorentz transformation

• Newtonian transformation

• Einstein transformation

What is the cosmic speed limit primarily associated with?

• The speed of light

• The speed of sound

• The speed of causality

• The speed of gravity

Why do massless particles travel at the speed of light?

• They are accelerated by cosmic rays

• They have no mass to impede their motion

• They are pushed by electromagnetic forces

• They are attracted by gravitational forces

What would happen in a universe with an infinite speed limit?

• Time and space would cease to exist

• Light would travel slower

• Mass would be infinite

• Gravity would be stronger

How can an infinite universe expand?

• By shrinking existing galaxies

• By creating new galaxies

• By increasing the distance between galaxies

• By adding more stars

What analogy is used to explain the universe's expansion?

• A ruler being stretched

• A rubber band being pulled

• A balloon being inflated

• A sponge absorbing water