Easy
Oceans & Marine Life
Tides, Depths & Reefs
The physics of the sea and the life that adapted to it.
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What is the deepest known point in the ocean?
The full library
Every quiz, in one place
Pick a subject, choose your level, and dive in. Each quiz is written and fact-checked by hand, with an explanation after every answer.
260 quizzes · page 2 of 6
Easy
Birds
Feathers, Flight & Song
Record holders, adaptations and the dinosaur connection.
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What is the largest living bird species?
Easy
Plants & Gardening
Roots, Leaves & Seeds
How plants feed, reproduce and survive the year.
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Plants produce their own food through which process?
Medium
Natural Disasters
When the Earth Turns Violent
What causes extreme events, and how they are measured.
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Tsunamis are most commonly triggered by what?
Easy
Ancient Egypt
Pharaohs & Pyramids
Monuments, rulers and the writing we spent centuries decoding.
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The Great Pyramid at Giza was built as a tomb for which pharaoh?
Medium
The Medieval World
Castles, Plague & Scholars
Feudal Europe, Byzantium and the Islamic Golden Age.
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Feudalism is best described as a system of what?
Medium
The World Wars
Causes, Turning Points & Treaties
How both wars began, turned and were settled.
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In which year did the First World War begin?
Medium
Royalty & Dynasties
Crowns & Successions
Ruling houses across three continents and how power moved.
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Who is the longest-reigning monarch in British history?
Easy
Flags & Emblems
Banners & Symbols
National flags, their parts and what they were meant to say.
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The flag of Japan depicts what?
Medium
Capitals & Cities
Cities of the World
The great cities, and what makes each one distinctive.
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Which major city spans two continents?
Easy
Islands
Land Surrounded by Water
How islands form and which ones people misplace.
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What is the largest island in the world?
Medium
Maps & Cartography
Projections & Coordinates
Reading maps properly, and knowing what each one gets wrong.
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The Mercator projection is well known for distorting what?
Medium
Photography
Light, Lenses & Exposure
What each camera setting actually changes, and why.
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Aperture primarily controls which two things?
Easy
Theatre & Dance
Stage & Step
Performance traditions and the terms used backstage.
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Shakespeare's company performed at which London theatre?
Medium
Poetry
Forms & Metre
The rules behind the forms, and the poets who shaped them.
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A sonnet traditionally consists of how many lines?
Medium
Journalism & Media
How News Gets Made
The craft, structure and rules behind a published story.
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The "five Ws" of reporting are who, what, when, where and what else?
Easy
Brands & Advertising
Logos, Slogans & Persuasion
What a brand is made of, and why the techniques work.
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The slogan "Just Do It" belongs to which company?
Medium
Business & Enterprise
Companies, Capital & Customers
Ownership, funding and the terms used loosely everywhere.
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Shares in a company represent what?
Medium
Psychology
Memory, Bias & Behaviour
The classic findings, stated carefully rather than confidently.
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Ivan Pavlov is best known for describing what?
Medium
Culture & Society
People, Groups & Change
The vocabulary of society, defined rather than argued.
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Sociology is the study of what?
Medium
Education & Learning
How Learning Works
Study methods that survive testing, and the ones that do not.
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Pedagogy refers to what?
Medium
Crime & Forensics
Evidence & Investigation
What forensic techniques can establish, and what they cannot.
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Forensic science is best defined as what?
Medium
Robotics & AI
Machines That Learn
The vocabulary of AI and robotics, kept precise.
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What does AI stand for?
Medium
The Internet
How the Network Works
Addresses, protocols and the terms people mix up.
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What does HTTP stand for?
Easy
Health & Fitness
Training, Food & Rest
The settled basics of exercise, nutrition and recovery.
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Cardiovascular exercise primarily strengthens which systems?
Easy
Capitals & Cities
World Capitals: The Basics
Ten capitals most people can name — and the reasons behind a few that trip them up.
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What is the capital of India?
Hard
Capitals & Cities
Capitals That Catch People Out
Ten countries where the famous city is not the capital — and the quieter one that is.
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What is the capital of Myanmar?
Medium
Capitals & Cities
Capitals That Moved
Countries that picked up their capital and put it somewhere else — and the ones doing it right now.
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Brazil moved its capital in 1960 away from which city?
Medium
Capitals & Cities
Capital Cities by Clue
A river, a statue, a nickname, an altitude — ten capitals identified by a single detail.
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Which capital was formed by merging two towns on opposite banks of the Danube?
Easy
Islands
Island Nations of the World
Ten countries that have no land border with anybody, from the Caribbean to the central Pacific.
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Which island nation lies roughly 800 kilometres east of Madagascar and was the only home of…
Medium
Islands
Islands of the Pacific
Ten questions on the ocean that holds more islands than all the others put together.
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Easter Island, home of the moai statues, is administered by which country?
Medium
Islands
Islands With a Story
Prisons, exiles, monasteries and one very expensive swap involving nutmeg.
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Which island in New York Harbor processed arriving immigrants between 1892 and 1954?
Hard
Islands
How Islands Are Made
Hotspots, subduction, sinking volcanoes and drowned hills — the four or five ways land ends up surrounded by sea.
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The Hawaiian island chain formed as the Pacific plate drifted over what?
Easy
Space & Astronomy
The Planets, Properly
Ten questions on the eight planets, from the hottest surface to the one lying on its side.
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Which planet orbits closest to the Sun?
Easy
Space & Astronomy
The Moon, Up Close
Phases, tides, the far side and the slow retreat — ten questions on the nearest thing in the sky.
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What causes the phases of the Moon?
Hard
Space & Astronomy
How Stars Live and Die
Ten questions on what makes a star shine, what it turns into afterwards, and where your atoms came from.
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What process powers a star like the Sun?
Medium
Space & Astronomy
Space Race Firsts
Ten milestones from 1957 to 1981, from the first satellite to the first shuttle launch.
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What was the first artificial satellite to orbit Earth?
Medium
Ancient Egypt
The Pharaohs of Egypt
Ten kings and one queen who took the throne, from the first unifier to the last native ruler.
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Which king appears on a famous carved palette wearing the crowns of both Upper and Lower Egypt?
Easy
Ancient Egypt
Gods, Temples & the Afterlife
The gods with animal heads, the weighing of the heart, and what the jars beside the coffin were for.
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Which god, shown with the head of a jackal, was associated with embalming?
Hard
Ancient Egypt
Building the Pyramids
Angles, casing stones, granite hauled from Aswan, and what the workers' village actually revealed.
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The Bent Pyramid at Dahshur, which changes angle partway up, was built for which king?
Medium
Ancient Egypt
Writing, Work & Daily Life
Beer rations, board games, eye paint and the rubbish heap that told us how ordinary Egyptians lived.
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Egyptian writing sheets were made from what?
Medium
Animals & Wildlife
Big Cats and Other Hunters
Ten questions on the animals that do the hunting, from cheetah claws to what actually holds a wolf pack together.
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Which is the largest of the big cats?
Hard
Animals & Wildlife
Animal Senses and Abilities
Electric fields, infrared pits, polarised light and infrasound: ten senses that no human has.
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How do most insect-eating bats locate prey in the dark?
Medium
Animals & Wildlife
Insects and Invertebrates
Beetles, woodlice, coral polyps and spider silk: ten questions on the animals without a backbone.
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Which of these is not an insect?
Easy
Animals & Wildlife
Animal Names and Groups
Gaggles, mobs, cobs and kids: ten questions on what we call animals in groups and on their own.
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What is a group of geese on the ground called?
Easy
Medicine & The Body
Bones, Muscles & Joints
Ten questions on the frame you walk around in — the bones, the muscles pulling on them and the joints in between.
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Which is the longest bone in the human body?
Medium
Medicine & The Body
The Heart and the Blood
Chambers, valves, vessels and what is actually floating in the blood they carry.
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Which vessel carries blood out of the heart to the rest of the body?
Medium
Medicine & The Body
The Senses, Explained
Sight, hearing, taste, smell, touch and the sixth one nobody counts — how each is actually built.
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Light entering the eye is focused onto which layer at the back of the eyeball?