Quantum Physics: Weirder Than You Think
Quantum physics describes the tiny world of atoms and light, where common sense often fails.
- Science
- Adults
- Medium
- Educational
- 10 questions
- about 5 min
- Feedback after each question
Against each other
For kids and playful souls
See the questions
Without the right answers, so they're still a surprise when you play.
Question 1
In quantum mechanics, what counts as an "observation" that affects a system?
- Only a conscious human looking at it
- Any interaction that records information
- Only an observer who knows its true state
- Only a measurement by a clumsy instrument
Question 2
What does Heisenberg's uncertainty principle say?
- Our tools are too crude to measure particles
- Position and momentum can't both be exactly defined
- A particle has an exact position we can't learn
- Measurements always disturb particles by bumping them
Question 3
Two particles are entangled and far apart. What can entanglement NOT do?
- Give results that are correlated
- Send a usable message faster than light
- Help build quantum computers
- Be used in real secure communication
Question 4
According to quantum mechanics, how is an electron in an atom best described?
- A tiny ball on a fixed circular orbit
- A particle sitting still at a hidden spot
- A cloud of probability called an orbital
- A pure wave with no particle properties
Question 5
Why did Erwin Schrödinger invent his famous cat thought experiment?
- To prove cats can truly be alive and dead
- To show human eyes decide a cat's fate
- To highlight how absurd quantum rules seem at large scale
- To design a test later done in real labs
Question 6
In physics, how big is a "quantum leap" of an electron?
- Enormous, a huge jump in energy
- A move between two distant orbits in space
- Tiny, a jump between energy levels
- As large as the atom's own nucleus
Question 7
How does a quantum computer gain its advantage on certain problems?
- It runs ordinary code at a faster clock speed
- It simply tries every answer and reads them all
- Interference boosts right answers and cancels wrong ones
- Each qubit secretly holds a hidden 0 or 1
Question 8
In the double-slit experiment, single electrons sent one by one build up what pattern?
- A random scatter with no pattern at all
- One bright spot in the middle
- An interference pattern of many bands
- Bands only when a person watches
Question 9
Which everyday technology depends on quantum physics?
- The spring in a ballpoint pen
- The transistor in your phone
- The gears in a bicycle
- The pulley in a flagpole
Question 10
What is quantum tunneling?
- A particle smashing a barrier with great force
- A particle gaining energy to leap over a barrier
- A particle crossing a barrier it lacks energy to climb
- A particle bent around a barrier by imprecise tools






