What was Schrödinger's cat meant to show?

The strangeness of superposition

Quantum Physics Quiz With Answers: Test Your Knowledge

This quantum physics quiz covers Planck's quanta, photons, wave-particle duality, the double-slit experiment, Heisenberg's uncertainty principle, Schrödinger's cat, entanglement and quantum computers. Test your knowledge with 10 questions on the physics of the very small.

Start Quantum Physics Quiz With Answers Quiz

🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Origins
Who proposed in 1900 that energy comes in small packets called quanta?
Photon
What is a photon?
Duality
Which experiment shows particles behaving like waves?
Uncertainty
Who stated that position and momentum cannot both be known exactly?
Cat
What was Schrödinger's cat meant to show?
Atom
Who proposed that electrons orbit in fixed energy levels in 1913?
Entanglement
Einstein called quantum entanglement what?
Nobel
The 2022 Nobel Prize in Physics honored experiments on what?
Computers
What are the basic units of quantum computers?
Tunneling
What lets particles pass through barriers they classically couldn't?

Explanations: answer key for all 10 questions

Q1: Who proposed in 1900 that energy comes in small packets called quanta?
Answer: Max Planck
This idea launched quantum theory.
Q2: What is a photon?
Answer: A particle of light
Einstein used photons to explain the photoelectric effect.
Q3: Which experiment shows particles behaving like waves?
Answer: Double-slit experiment
Single electrons form interference patterns.
Q4: Who stated that position and momentum cannot both be known exactly?
Answer: Werner Heisenberg
This is the uncertainty principle.
Q5: What was Schrödinger's cat meant to show?
Answer: The strangeness of superposition
It was a thought experiment from 1935.
Q6: Who proposed that electrons orbit in fixed energy levels in 1913?
Answer: Niels Bohr
Electrons jump between levels by absorbing or emitting light.
Q7: Einstein called quantum entanglement what?
Answer: Spooky action at a distance
Experiments have confirmed it.
Q8: The 2022 Nobel Prize in Physics honored experiments on what?
Answer: Entangled photons
Aspect, Clauser and Zeilinger shared it.
Q9: What are the basic units of quantum computers?
Answer: Qubits
Qubits can exist in superposition.
Q10: What lets particles pass through barriers they classically couldn't?
Answer: Quantum tunneling
It powers the Sun's fusion.

Quantum Physics Quiz – The Strange World of the Very Small

Quantum physics describes how matter and energy behave at the smallest scales. Beginning with Max Planck's idea of energy packets in 1900, scientists discovered that light and particles act both as waves and as particles, and that nature has a built-in fuzziness.

Quantum ideas are strange. Particles can exist in several states at once, called superposition, and entangled particles stay linked across vast distances. Heisenberg's uncertainty principle sets limits on what we can measure, and Schrödinger's cat illustrates how odd these rules seem in everyday terms.

Despite its weirdness, quantum physics is everywhere in modern technology. It explains how lasers, transistors, LEDs, MRI and solar cells work. Researchers are now building quantum computers and encrypted communication systems based on these principles.

What This Quiz Teaches

This quiz is for science fans curious about quantum physics.

Who started quantum theory
What photons are
What the double-slit shows
What uncertainty means
What qubits are

Did You Know?

Quantum tunneling helps the Sun shine.
Electrons are described by wave functions.
Quantum dots color some TV screens.
The word quantum means how much in Latin.
2025 was the International Year of Quantum Science and Technology.