Science Puzzles

Atmospheric X-Ray

Earth Science Spark

Balance in a Vacuum

Engineering Supernova

Black Hole Information

Space Science Supernova

Boltzmann Brains

Physical Science Supernova

Burning Crab Lines

Engineering Supernova

Can a swamp clean dirty water?

Earth Science Spark

Can Sound Turn a Corner but Light Cannot?

Physical Science Spark

Can You Crack Nature’s Pattern?

Scientific Thinking Spark

Can You Mix It Back?

Physical Science Spark

Can You Read the Volcano’s Warning Signs?

Earth Science Spark

Can You Spot the Bad Experiment?

Scientific Thinking Charge

Cantilever Tension

Engineering Charge

Combustion Dependency

Physical Science Spark

Could a Blue Whale Survive on Land?

Life Science Charge

Could You Hear an Explosion in Space?

Space Science Spark

Could You Jump Over a House on the Moon?

Space Science Spark

Genetic Thread Count

Life Science Spark

Hot Tea, Cold Milk: When Should You Add the Milk?

Physical Science Supernova

How Does a Flower Trick a Bee?

Life Science Spark

How Does a Plane Stay Up?

Engineering Charge

Ice Cream Causes Sunburn: True or False?

Scientific Thinking Supernova

Ice in a Full Glass: Will It Overflow?

Physical Science Charge

Lunar Pendulum Clock

Space Science Charge

Mass of the Pendulum

Physical Science Charge

Maxwell’s Demon

Physical Science Supernova

Melting Iceberg Stasis

Physical Science Charge

My Grandfather Smoked

Scientific Thinking Spark

Ocean Salinity Origin

Earth Science Charge

Olbers’ Dark Sky

Space Science Supernova

One Result Is Not a Result

Scientific Thinking Spark

Orbital Trajectory

Space Science Charge

Peto’s Paradox

Life Science Supernova

Pirogue Displacement

Engineering Supernova

Sharp Shooting the Barn Door

Scientific Thinking Charge

Solar Eclipse Geometry

Space Science Spark

Solid, Liquid or Both?

Physical Science Charge

Sound of a Space Spark

Space Science Supernova

The Absence in the Telescope

Scientific Thinking Charge

The Anomaly in the Data

Scientific Thinking Supernova

The Armour Dilemma

Scientific Thinking Charge

The Bartender’s Pistol

Scientific Thinking Spark

The Base Rate Fallacy

Scientific Thinking Supernova

The Bernoulli Constriction

Engineering Charge

The Charcoal Lifecycle

Physical Science Spark

The Coastline Paradox

Physical Science Charge

The Cosmic Balloon

Space Science Charge

The Cure That Only Works on Mice

Scientific Thinking Supernova

The Dartboard and the Clock

Scientific Thinking Spark

The Desert Pack

Scientific Thinking Charge

The Doubloon Ratio

Scientific Thinking Supernova

The Dowser’s Challenge

Scientific Thinking Charge

The Drawer of Failed Studies

Scientific Thinking Supernova

The Echo Reflection

Physical Science Spark

The Elevator Tool

Engineering Spark

The Fermi Silence

Space Science Charge

The Fertiliser That Proved Nothing

Scientific Thinking Charge

The Four T-Posts

Engineering Spark

The Graph That Starts at Ninety

Scientific Thinking Supernova

The Gravity Slingshot

Space Science Supernova

The Gulp Bait Selection

Scientific Thinking Charge

The Gyroscopic Wheel

Physical Science Supernova

The Happiest Plants in the Lab

Scientific Thinking Charge

The Lazy Balloon

Physical Science Supernova

The Missing Half of the Trial

Scientific Thinking Spark

The Mpemba Effect

Physical Science Supernova

The Professor Said So

Scientific Thinking Charge

The Relativistic Twins

Space Science Supernova

The Sliding Pucks

Physical Science Supernova

The Ten-Pence Blind Spot

Scientific Thinking Spark

The Theory That Explains Everything

Scientific Thinking Charge

The Umbrella Blame

Scientific Thinking Spark

The Unseen Weight

Earth Science Spark

The Wason Sequence

Scientific Thinking Supernova

The Worst Schools Improve

Scientific Thinking Charge

Twenty Jellybean Colours

Scientific Thinking Supernova

Two Explanations, One Comet

Scientific Thinking Supernova

Two-Pan Boudin Balance

Engineering Charge

Wetland Filtration

Earth Science Spark

What Carved This Canyon?

Earth Science Spark

What Comes Next in the Method?

Scientific Thinking Spark

What Does the Fingerprint Tell You?

Scientific Thinking Spark

What’s Hiding in a Drop of Pond Water?

Life Science Spark

Where Did the Energy Go?

Physical Science Charge

Which Animal Doesn’t Belong?

Life Science Spark

Which Bulb Burns Brighter?

Physical Science Spark

Which Cloud Brings the Rain?

Earth Science Spark

Which Comes First, the Tadpole or the Frog?

Life Science Spark

Which Cools Faster, the Big Mug or the Small Cup?

Physical Science Charge

Which Hits the Ground First?

Physical Science Spark

Which Magnet Wins the Tug of War?

Physical Science Spark

Which Measurement Can You Trust?

Scientific Thinking Supernova

Which Shape Holds the Most Weight?

Engineering Spark

Which Way Does the Balloon Lean When the Car Brakes?

Physical Science Supernova

Which Way Does the Blood Go?

Life Science Spark

Which Way Does the Storm Spin?

Earth Science Spark

Which Way Is Down in Space?

Space Science Spark

Who Knew What in the Trial?

Scientific Thinking Charge

Why Can’t You Tickle Yourself?

Life Science Spark

Why Did the Tortoises Grow So Big?

Life Science Supernova

Why Do Earthquakes Happen Where They Do?

Earth Science Charge

Why Do Stars Twinkle but Planets Don’t?

Space Science Spark

Why Do Your Eyes Fall for This Trick?

Life Science Spark

Why Does the Moon Change Shape?

Space Science Spark

Why Does the Sea Breeze Turn Around at Night?

Earth Science Charge

Why Does the Spinning Skater Speed Up?

Physical Science Spark

Why Does the Straw Look Bent?

Physical Science Spark

Why Doesn’t the Bridge Fall Down?

Engineering Spark

Why Doesn’t the Sun Burn Out Like a Fire?

Space Science Charge

Why Doesn’t the Water Fall Out?

Physical Science Spark

Why Don’t Penguins’ Feet Freeze?

Life Science Charge

Why Is the Desert Freezing at Night?

Earth Science Spark

Why Is the Sea Salty but the Rain Is Not?

Earth Science Charge

Zeno’s Motionless Arrow

Physical Science Supernova