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The biggest? The fastest? The most? — answers and explanations for all 100 questions. Cover the answer, have a guess first, then check the explanation. Want to play it as a quiz? Try it at the Quiz Playground!
Q. What is the biggest animal in the world?
Options: Giraffe · Elephant · Hippo · Whale
Answer: Whale
The blue whale of the ocean is the biggest creature of all!
Q. What is the highest mountain in the world?
Options: Mount Everest · Mount Fuji · Denali · Kilimanjaro
Answer: Mount Everest
Mount Everest rises over 8,800 meters — the top of the world.
Q. What is the largest ocean in the world?
Options: Atlantic · Arctic · Pacific · Indian
Answer: Pacific
The Pacific is Earth's widest and deepest ocean.
Q. What is the largest continent in the world?
Options: Europe · Africa · North America · Asia
Answer: Asia
Asia is the biggest continent — more than half the world lives there.
Q. Which river is usually called the longest in the world?
Options: Yellow River · Mississippi · Nile · Danube
Answer: Nile
The Nile is famous as the longest river (the Amazon competes for the title).
Q. What is the largest country in the world?
Options: China · Canada · Russia · United States
Answer: Russia
Russia is almost twice the size of Canada, the runner-up!
Q. What is the largest hot desert in the world?
Options: Sahara Desert · Gobi Desert · Taklamakan Desert · Mojave Desert
Answer: Sahara Desert
Africa's Sahara is the biggest hot desert.
Q. Which country recently became the most populous in the world?
Options: Indonesia · Brazil · United States · India
Answer: India
India recently passed China — over 1.4 billion people live there.
🌊 Q. What is the deepest ocean trench in the world?
Options: Red Sea · Mediterranean Sea · Mariana Trench · Caribbean Sea
Answer: Mariana Trench
About 11 km deep — Mount Everest would sink out of sight!
🏝️ Q. What is the largest island in the world?
Options: Greenland · Iceland · Madagascar · New Guinea
Answer: Greenland
Greenland, the land of ice!
🤏 Q. What is the smallest country in the world?
Options: Singapore · Maldives · Vatican City · Monaco
Answer: Vatican City
Vatican City, inside Rome — just 0.44 square kilometers!
💦 Q. What is the highest waterfall in the world?
Options: Iguazu Falls · Angel Falls · Victoria Falls · Niagara Falls
Answer: Angel Falls
Angel Falls in Venezuela — 979 meters!
🏞️ Q. What is the world's largest lake (a salt lake as big as a sea)?
Options: Caspian Sea · Lake Superior · Lake Baikal · Lake Victoria
Answer: Caspian Sea
The Caspian Sea — so big it's called a sea!
🏞️ Q. What is the deepest lake in the world?
Options: Lake Superior · Lake Titicaca · Lake Baikal · Caspian Sea
Answer: Lake Baikal
Siberia's Lake Baikal — more than 1,600 meters deep!
🏞️ Q. What is the Amazon River number one in the world for?
Options: Coldest river · Highest river · Amount of water · Shortest river
Answer: Amount of water
For sheer water volume, the Amazon is the champion!
🥶 Q. What is the coldest continent in the world?
Options: Africa · Europe · Asia · Antarctica
Answer: Antarctica
Antarctica — it can drop below minus 80°C!
🥵 Q. Which US valley recorded the hottest temperature on Earth?
Options: Niagara · Death Valley · Yellowstone · Grand Canyon
Answer: Death Valley
Death Valley hit 56.7°C (134°F)!
🏜️ Q. What is the driest desert, where it almost never rains?
Options: Kalahari Desert · Atacama Desert · Gobi Desert · Sahara Desert
Answer: Atacama Desert
Chile's Atacama! Some spots went decades without rain.
⛰️ Q. What is the longest mountain range in the world?
Options: Andes · Alps · Himalayas · Rockies
Answer: Andes
The Andes run 7,000 km down South America!
🏙️ Q. Which country has the highest capital city in the world?
Options: Egypt · Japan · Bolivia · France
Answer: Bolivia
La Paz sits more than 3,600 meters above sea level!
🏙️ Q. Which is considered the most populous city area in the world?
Options: Sydney · Paris · Tokyo · Seoul
Answer: Tokyo
Greater Tokyo has more than 30 million people!
🧂 Q. Which lake is the lowest in the world, below sea level?
Options: Caspian Sea · Black Sea · Baltic Sea · Dead Sea
Answer: Dead Sea
The Dead Sea lies about 400 meters below sea level!
🧂 Q. What makes the Dead Sea special?
Options: The water is hot · It's full of fish · The waves are huge · It's so salty you float
Answer: It's so salty you float
It's about ten times saltier than the ocean!
🪸 Q. What is the largest coral reef in the world?
Options: Florida Reef · Maldives Reef · Great Barrier Reef · Red Sea Reef
Answer: Great Barrier Reef
Australia's Great Barrier Reef — visible from space!
🐆 Q. What is the fastest animal on land?
Options: Ostrich · Lion · Horse · Cheetah
Answer: Cheetah
The cheetah can top 100 km per hour!
🦒 Q. What is the tallest animal in the world?
Options: Horse · Giraffe · Elephant · Camel
Answer: Giraffe
The long-necked giraffe stands over 5 meters tall!
🐘 Q. What is the largest land animal in the world?
Options: Hippo · Rhino · Giraffe · African elephant
Answer: African elephant
The heaviest animal on land — the elephant!
🐋 Q. What is thought to be the largest animal in Earth's history?
Options: Blue whale · Elephant · Tyrannosaurus · Giraffe
Answer: Blue whale
The blue whale — bigger than any dinosaur!
🦅 Q. What is the fastest bird in the sky?
Options: Pigeon · Peregrine falcon · Eagle · Swallow
Answer: Peregrine falcon
Diving falcons top 300 km per hour!
🦤 Q. Which bird grows the largest?
Options: Swan · Penguin · Eagle · Ostrich
Answer: Ostrich
The ostrich — it can't fly, but it's the biggest bird!
🦈 Q. What is the largest fish in the world?
Options: Whale shark · Great white shark · Ray · Tuna
Answer: Whale shark
The gentle whale shark is the biggest fish!
🦥 Q. Which animal is famous as the slowest?
Options: Sloth · Snail · Turtle · Koala
Answer: Sloth
The sloth — it hangs around sleeping all day!
🐢 Q. Which animal is famous for living the longest?
Options: Giant tortoise · Squirrel · Puppy · Rabbit
Answer: Giant tortoise
Tortoises can live more than 100 years!
🥚 Q. Which animal lays the biggest egg?
Options: Penguin · Chicken · Ostrich · Duck
Answer: Ostrich
One ostrich egg weighs about 1.5 kg — more than 20 chicken eggs — and its shell is super tough.
🪲 Q. Which insect is famous as the strongest?
Options: Rhinoceros beetle · Dragonfly · Mosquito · Butterfly
Answer: Rhinoceros beetle
The rhinoceros beetle lifts dozens of times its own weight!
🦟 Q. Which animal jumps the highest for its size?
Options: Grasshopper · Flea · Kangaroo · Frog
Answer: Flea
A flea can jump over 100 times its body length!
🧑 Q. What is the largest organ in our body?
Options: Heart · Liver · Brain · Skin
Answer: Skin
The skin covers your whole body!
🦷 Q. What is the hardest part of our body?
Options: Skull · Fingernails · Tooth enamel · Heel bone
Answer: Tooth enamel
Tooth enamel is the hardest thing in your body!
🌸 Q. What is the largest flower in the world?
Options: Rafflesia · Tulip · Rose · Sunflower
Answer: Rafflesia
Rafflesia — a meter wide, with a terrible smell!
🌲 Q. What is the tallest tree in the world?
Options: Bamboo · Palm tree · Sequoia (redwood) · Pine tree
Answer: Sequoia (redwood)
Redwoods grow more than 100 meters tall!
🎋 Q. Which plant is famous for growing the fastest?
Options: Pine · Rose · Cactus · Bamboo
Answer: Bamboo
Bamboo can grow a full meter in one day!
🏙️ Q. What is the tallest building in the world?
Options: Burj Khalifa · Lotte World Tower · Empire State Building · Eiffel Tower
Answer: Burj Khalifa
Dubai's Burj Khalifa — 828 meters!
🇦🇪 Q. Which country is the Burj Khalifa in?
Options: South Korea · United States · United Arab Emirates · China
Answer: United Arab Emirates
In the desert city of Dubai!
🏢 Q. What is the tallest building in the United States?
Options: Empire State Building · One World Trade Center · Willis Tower · Chrysler Building
Answer: One World Trade Center
One World Trade Center in New York stands 1,776 feet tall — the number honors the year 1776.
🧱 Q. What is considered the longest structure ever built?
Options: Great Wall of China · Eiffel Tower · Pyramids · Colosseum
Answer: Great Wall of China
The Great Wall stretches for thousands of kilometers!
🏜️ Q. What is the largest desert in the world (cold deserts count too)?
Options: Sahara Desert · Arabian Desert · Gobi Desert · Antarctic Desert
Answer: Antarctic Desert
Antarctica barely gets any rain — so it counts as a desert!
🔺 Q. Which ancient wonder of the world is still standing today?
Options: Colosseum · Eiffel Tower · Great Pyramid of Giza · Great Wall
Answer: Great Pyramid of Giza
The only ancient wonder that survives to this day!
🏯 Q. What is considered the largest palace in the world?
Options: Buckingham Palace · Palace of Versailles · Forbidden City · Gyeongbokgung
Answer: Forbidden City
Beijing's Forbidden City, with thousands of rooms!
🌍 Q. Which continent has the most countries?
Options: Africa · Europe · Asia · South America
Answer: Africa
Africa has more than 50 countries!
🕐 Q. Which country's mainland crosses the most time zones?
Options: United Kingdom · Russia · United States · Japan
Answer: Russia
Russia is so wide it spans 11 time zones!
🏝️ Q. Which country is said to have the most islands in the world?
Options: Sweden · Austria · Mongolia · Switzerland
Answer: Sweden
Sweden has over 260,000 islands! Mongolia, Switzerland, and Austria have no sea at all.
🤏 Q. Which country has the smallest population in the world?
Options: Iceland · Vatican City · Monaco · Maldives
Answer: Vatican City
Vatican City — fewer than 1,000 people!
🌴 Q. What do we call the hottest region, where the equator passes?
Options: The tropics · The polar zone · The subarctic · The temperate zone
Answer: The tropics
The hot tropics, near the equator!
🧊 Q. What do we call the coldest regions, like the North and South Poles?
Options: The tropics · The temperate zone · The desert · The polar zone
Answer: The polar zone
The ice-covered polar zone!
🪐 Q. What is the largest planet in the solar system?
Options: Mars · Earth · Jupiter · Saturn
Answer: Jupiter
Giant Jupiter!
🪐 Q. What is the smallest planet in the solar system?
Options: Earth · Jupiter · Saturn · Mercury
Answer: Mercury
Little Mercury, closest to the Sun!
🔥 Q. What is the hottest planet in the solar system?
Options: Mars · Venus · Jupiter · Mercury
Answer: Venus
Venus — its thick air traps the heat!
☀️ Q. What is the closest star to Earth?
Options: The North Star · The Sun · Venus · Sirius
Answer: The Sun
The Sun, which gives us light and warmth!
⭐ Q. What is the brightest star in the night sky?
Options: Sirius · The North Star · Vega · Altair
Answer: Sirius
Sirius, in the constellation of the Great Dog!
💫 Q. Is anything in the universe faster than light?
Options: Yes · No — light is the fastest
Answer: No — light is the fastest
Light is the fastest thing in the universe!
🌕 Q. What happens to your weight on the Moon?
Options: Stays the same · Becomes zero · You get lighter (about 1/6) · You get heavier
Answer: You get lighter (about 1/6)
Weaker gravity lets you bounce around!
🏃 Q. Which event decides the fastest human at the Olympics?
Options: Weightlifting · High jump · Marathon · 100-meter dash
Answer: 100-meter dash
The 100-meter sprint — the 'human bullet' race!
🏃 Q. What is the longest Olympic running event?
Options: Marathon (42.195 km) · 1500 m · 100 m · 400 m
Answer: Marathon (42.195 km)
The marathon — 42.195 kilometers!
⚽ Q. What is considered the most popular sport in the world?
Options: Archery · Soccer · Fencing · Curling
Answer: Soccer
Soccer — the whole world plays it!
✈️ Q. About how high do passenger planes fly?
Options: 1 meter above the sea · About 10 km up, near the stratosphere · In outer space · Below the clouds
Answer: About 10 km up, near the stratosphere
Passenger jets fly above the clouds!
🐦 Q. What is the smallest bird in the world?
Options: Hummingbird · Swallow · Sparrow · Pigeon
Answer: Hummingbird
The bee hummingbird — about the size of a bumblebee!
🐁 Q. What is considered the smallest mammal in the world?
Options: Mouse · Bat · Shrew (pygmy shrew) · Squirrel
Answer: Shrew (pygmy shrew)
The tiny shrew — about the size of your thumbnail!
🥶 Q. What happens at the lowest possible temperature (absolute zero)?
Options: Things glow · Water boils · Fires start · Nothing can get any colder
Answer: Nothing can get any colder
About minus 273°C is as cold as it gets!
🏞️ Q. What's special about the world's shortest rivers?
Options: They're only a few to a few hundred meters long · They're seas · They're lakes · They're thousands of km long
Answer: They're only a few to a few hundred meters long
Even a very short stream can be called a river!
👂 Q. Where in our body are the smallest bones?
Options: Hand · Foot · Inside the ear · Nose
Answer: Inside the ear
The tiny ear bones that carry sound!
⚡ Q. Where does lightning strike most often on Earth?
Options: Under the sea · The North Pole · The middle of a desert · Lakes in the tropics
Answer: Lakes in the tropics
Lake Catatumbo in Venezuela is famous for nonstop lightning!
💦 Q. Which waterfalls are famous as the biggest (widest) in the world?
Options: Yosemite Falls · Angel Falls · Niagara Falls · Victoria Falls and Iguazu Falls
Answer: Victoria Falls and Iguazu Falls
Victoria and Iguazu stretch unbelievably wide!
🌳 Q. What is the largest tropical rainforest in the world?
Options: Congo Rainforest · The Amazon · Southeast Asian jungle · Daintree Rainforest
Answer: The Amazon
The Amazon — the 'lungs of the Earth'!
❄️ Q. What kind of places get the most snow in the world?
Options: The equator · Inside caves · Deserts · Cold mountains near the sea
Answer: Cold mountains near the sea
In Japan's snow country, drifts pile up to the rooftops!
🌲 Q. How old are the world's oldest trees?
Options: 10 years · Thousands of years · 100 years · 50 years
Answer: Thousands of years
Some trees are almost 5,000 years old!
🕳️ Q. Which country has the world's largest cave?
Options: Mongolia · South Korea · Vietnam · Japan
Answer: Vietnam
Vietnam's Son Doong cave could fit a skyscraper inside!
🧂 Q. Which waters are famous as the saltiest?
Options: Baltic Sea · Arctic Ocean · Caribbean Sea · The Red Sea and Dead Sea area
Answer: The Red Sea and Dead Sea area
Lots of evaporation makes them extra salty!
🏄 Q. Which sport is famous for riding huge, powerful waves?
Options: Archery · Surfing · Curling · Skiing
Answer: Surfing
Surfing giant waves!
⛰️ Q. What is the highest mountain in North America?
Options: Denali · Mount Whitney · Pikes Peak · Mount Rainier
Answer: Denali
Denali in Alaska rises 6,190 meters — its name means 'the tall one'.
🏔️ Q. What is the highest mountain in Africa?
Options: Mount Kenya · Atlas Mountains · Kilimanjaro · Table Mountain
Answer: Kilimanjaro
Kilimanjaro is about 5,895 meters tall — snowy even near the equator!
🏞️ Q. What is the longest river in Europe?
Options: Volga · Danube · Rhine · Seine
Answer: Volga
Russia's Volga flows about 3,530 kilometers.
🏞️ Q. What is the longest river in Asia?
Options: Ganges · Yangtze · Mekong · Yellow River
Answer: Yangtze
China's Yangtze flows about 6,300 kilometers.
🏝️ Q. What is the largest island in Europe?
Options: Iceland · Sicily · Great Britain · Ireland
Answer: Great Britain
Great Britain — home to England, Scotland, and Wales.
🏙️ Q. What is the most populous city in the United States?
Options: Los Angeles · Chicago · Houston · New York City
Answer: New York City
New York City — more than 8 million people!
📖 Q. What is the oldest surviving book printed with movable metal type?
Options: The Gutenberg Bible · The Dead Sea Scrolls · Jikji · The Book of Kells
Answer: Jikji
Jikji, printed in Korea in 1377 — about 78 years before the Gutenberg Bible!
📕 Q. What famous book collects world records?
Options: Encyclopedia · Dictionary · Guinness World Records · Atlas
Answer: Guinness World Records
Guinness World Records — the book of every 'most' and 'best'!
🥇 Q. What do we call words like 'biggest' and 'fastest' that show the very top?
Options: Opposites · Superlatives · Averages · Plurals
Answer: Superlatives
Superlatives point to the very top — the best of the best!
🐘 Q. Which of these 'world's biggest' pairs is WRONG?
Options: Biggest continent — Asia · Highest mountain — Everest · Biggest ocean — Pacific · Biggest land animal — Giraffe
Answer: Biggest land animal — Giraffe
The biggest land animal is the elephant — the giraffe is the tallest!
🐢 Q. Which of these 'fastest' pairs is WRONG?
Options: Fastest fish — Sailfish · Fastest bird — Falcon · Fastest land animal — Turtle · Fastest land animal — Cheetah
Answer: Fastest land animal — Turtle
Turtles are slowpokes! The land speed king is the cheetah.
🏔️ Q. Which mountain range is Mount Everest in?
Options: Andes · Rockies · Himalayas · Alps
Answer: Himalayas
The Himalayas of Asia!
🏔️ Q. About how tall is Mount Everest, the world's highest mountain?
Options: About 8,849 m · About 100 m · About 100 km · About 1,000 m
Answer: About 8,849 m
About 8,849 meters — and India pushing into Asia makes it a tiny bit taller every year!
🌊 Q. How big is the Pacific among Earth's oceans?
Options: The widest ocean on Earth · Smaller than a river · Smaller than a lake · The smallest ocean
Answer: The widest ocean on Earth
The Pacific is the biggest part of Earth's oceans!
🌏 Q. Which continent has the most people?
Options: Europe · Asia · North America · Africa
Answer: Asia
Asia — more than half the world lives there!
🦘 Q. What is the smallest continent in the world?
Options: Oceania (Australia) · South America · Europe · Antarctica
Answer: Oceania (Australia)
Oceania is the smallest continent!
💧 Q. Which covers more of the Earth — water or land?
Options: Water (about 70%) · Nobody knows · Land · They're equal
Answer: Water (about 70%)
About 70% of Earth is covered in water!
🏛️ Q. Where did the world's oldest civilizations begin?
Options: In the middle of deserts · Under the sea · Beside great rivers · On mountaintops
Answer: Beside great rivers
Civilizations grew up along big rivers, where there was water!
🗣️ Q. Which language has the most native speakers?
Options: Chinese · Thai · Italian · Korean
Answer: Chinese
Chinese — spoken in the world's second most populous country!
📖 Q. What is considered the best-selling book in the world?
Options: Comic books · Atlases · The Bible · Cookbooks
Answer: The Bible
The Bible, translated into hundreds of languages!
🦁 Q. What can you see at the world's biggest zoos and aquariums?
Options: All kinds of animals from many countries · Real live dinosaurs · Dragons · Aliens
Answer: All kinds of animals from many countries
Meet living animals from all over the world!
🥇 Q. Which of these is one of the most precious metals?
Options: Gold · Iron · Copper · Aluminum
Answer: Gold
Shiny, rare, and precious — gold!