169 Fun Facts About 3rd Grade

How many continents are there on Earth?

The seven are Africa, Antarctica, Asia, Australia, Europe, North America and South America. Some countries teach six by joining Europe and Asia together.

Which is the biggest and deepest of the world's oceans?

The Pacific is so big that all of Earth's land could fit inside it with room to spare.

Which city is the capital of the United States?

Washington, D.C. is not part of any state; the D.C. stands for District of Columbia.

Which US state is the biggest by area?

Alaska is bigger than Texas, California and Montana put together, but it has fewer people than most states.

Which is the longest river in the world?

The Nile flows north through Africa for about 4,100 miles (6,650 km) before reaching the Mediterranean Sea, which makes it the longest river by the traditional measurement.

What is the tallest mountain on Earth above sea level?

Everest sits on the border of Nepal and China and is still growing a tiny bit every year.

Which is the largest hot desert in the world?

The Sahara covers most of North Africa and is almost as big as the whole United States.

The Statue of Liberty was a gift to the United States from which country?

France gave the Statue of Liberty to the United States in 1886. It crossed the Atlantic in 350 pieces packed in 214 crates and was assembled in New York Harbor.

The Grand Canyon is in which US state?

The Grand Canyon is in northern Arizona. The Colorado River carved it over millions of years, and it is more than a mile deep in places.

Which continent is the largest?

Asia is home to more than half of all the people on Earth, including everyone in China and India.

Which continent is the smallest?

Australia is also the flattest continent, and it is the only one that is a single country.

Which continent is the coldest?

Antarctica is so cold that it holds the record for the lowest temperature ever measured on Earth.

The Eiffel Tower stands in which city?

The Eiffel Tower stands in Paris. It was built for the 1889 World's Fair and was originally meant to be taken down after 20 years.

Giant pandas eat almost nothing but which plant?

A panda can spend 12 hours a day eating and get through more than 20 pounds of bamboo.

Who was the first president of the United States?

George Washington served two terms, from 1789 to 1797, and then chose to step down, which set an example most presidents followed.

On what date was the Declaration of Independence adopted?

The Continental Congress adopted the Declaration of Independence on July 4, 1776, which is why Americans celebrate Independence Day on the Fourth of July.

Abraham Lincoln was which number president of the United States?

Abraham Lincoln was the 16th president, serving from 1861 until 1865. He led the country through the Civil War, and his face is on the penny and the five-dollar bill.

Martin Luther King Jr. is famous for which speech, given to a huge crowd at the Lincoln Memorial in 1963?

King delivered "I Have a Dream" on August 28, 1963, at the March on Washington, speaking for about 17 minutes from the Lincoln Memorial steps to roughly 250,000 people.

In which year did Christopher Columbus first sail across the Atlantic Ocean?

Columbus sailed from Spain in August 1492 with three ships, the Nina, Pinta and Santa Maria, and reached land in the Bahamas on October 12, 1492.

In 1955, Rosa Parks became famous for refusing to give up her seat on what?

Her arrest in Montgomery, Alabama, started a bus boycott that lasted more than a year.

The Wright brothers are famous for building and flying the first successful what?

Their airplane, the Wright Flyer, made the first powered flight on December 17, 1903; it lasted 12 seconds and covered 120 feet, shorter than a jumbo jet is long.

Who was the first person to walk on the Moon?

Neil Armstrong was first onto the Moon during Apollo 11. Buzz Aldrin followed about 20 minutes later while Michael Collins stayed in orbit in the command module.

The Pilgrims sailed to Plymouth in 1620 aboard which ship?

The Mayflower carried about 102 passengers across the Atlantic in roughly 66 days in 1620, landing at Plymouth, where the colonists held the first Thanksgiving in 1621.

How many stars are on the flag of the United States?

There is one star for each state; the 50th star was added in 1960 after Hawaii joined.

The Sun is which kind of object?

It looks huge and bright only because it is so close; it is really a medium-sized star.

Which object is Earth's only natural satellite?

The Moon is slowly drifting away from Earth by about an inch and a half every year.

About how many days does it take Earth to travel once around the Sun?

Earth takes about 365 days (365.25, to be exact) to orbit the Sun once. The extra quarter of a day is why a leap day is added every four years.

How many planets are in our Solar System?

Pluto used to make it nine, but in 2006 scientists decided it was a dwarf planet instead.

Which is the largest planet in our Solar System?

More than 1,300 Earths could fit inside Jupiter, and its Great Red Spot is a storm bigger than our planet.

Which planet is nicknamed the Red Planet?

Mars looks red because its soil is full of rusty iron dust.

Which planet is famous for its bright, wide rings?

Saturn's rings are made mostly of chunks of water ice, from dust-sized grains to pieces as big as houses, and the main rings stretch about 175,000 miles across.

A magnet will pull on objects made of which metal?

That is why a magnet sticks to a steel refrigerator door but not to a gold ring.

About how many bones does an adult human have?

An adult human has 206 bones. Babies are born with about 270, but many of them fuse together as the child grows.

Which organ pumps blood around your body?

Your heart beats about 100,000 times a day without you ever having to think about it.

Your lungs take which gas out of the air and pass it into your blood?

You breathe out carbon dioxide, which plants then use to make their food.

At what temperature does water freeze into ice on the Celsius scale?

Water freezes at 0 °C on the Celsius scale, the same temperature as 32 degrees on the Fahrenheit scale used in the United States.

Plants make their own food using energy from what?

Plants use energy from sunlight in photosynthesis, turning water and carbon dioxide into sugar inside their leaves.

Which part of a plant takes in water from the soil?

Roots also hold the plant firmly in the ground so it does not blow over.

A caterpillar goes into which stage before it comes out as a butterfly?

Inside the chrysalis, the caterpillar's body is almost completely rebuilt into a butterfly.

Baby frogs that hatch from eggs and swim with tails are called what?

Tadpoles breathe with gills like fish, then grow legs and lungs and lose their tails.

Evaporation, clouds forming and rain falling are all steps in which natural process?

This is the water cycle: water evaporates, condenses into clouds and falls as rain, so the same water keeps going around and a raindrop today may once have been drunk by a dinosaur.

Which group of animals has fur or hair and feeds milk to its babies?

Whales and dolphins are mammals too, even though they live in the sea and have almost no hair.

Penguins are birds that cannot do what?

Penguins cannot fly: their wings work as flippers instead, and some penguins can swim faster than 20 miles per hour.

Which is the largest animal that has ever lived?

A blue whale's heart is about the size of a small car, and its tongue can weigh as much as an elephant.

Which is the fastest land animal?

A cheetah can go from standing still to 60 miles per hour in about three seconds.

Which is the tallest land animal?

A giraffe's neck alone can be six feet long, yet it has the same number of neck bones as you do: seven.

How many legs does a spider have?

Spiders are not insects; insects have six legs and three body parts, spiders have eight legs and two.

At what temperature does water boil on the Celsius scale?

Water boils at 100 °C at sea level. On a high mountain it boils at a lower temperature because the air pressure is lower.

How many sides does a hexagon have?

Honeybees build their honeycomb out of hexagons because the shape fits together with no gaps.

How many minutes are in one hour?

An hour has 60 minutes and a minute has 60 seconds, a counting-by-60 system that goes back to ancient Babylon.

How many inches are in one foot?

Three feet make a yard, and 5,280 feet make a mile.

How many cents is a US quarter worth?

25 cents is a quarter of a dollar, which is why the coin is called a quarter: four of them make one dollar.

How many things are in a dozen?

Eggs are usually sold by the dozen, and a baker's dozen is one extra: 13.

How many degrees are in a right angle?

A right angle is 90 degrees, the corner of a square or a sheet of paper; four right angles make a full circle of 360 degrees.

How many years are in a century?

A century is 100 years. A period of ten years is a decade, and a thousand years is a millennium.

How many days are in a leap year?

A leap year has 366 days instead of 365. The extra day is February 29, added almost every four years.

In Roman numerals, what number does the letter X stand for?

X stands for 10 and V for 5, so XV is 15 and XX is 20. Roman numerals appear on clock faces and in movie credits.

In art class, which three colors are usually taught as the primary colors?

Mixing two primaries makes a secondary color: red and yellow make orange, yellow and blue make green.

In the book Charlotte's Web, what is the name of the pig?

The pig is Wilbur. Charlotte the spider writes words like "Some Pig" in her web to save him from being slaughtered.

Which brother and sister travel through time in the Magic Tree House books?

Jack and Annie find the tree house in Frog Creek, Pennsylvania; Morgan le Fay, and later the wizard Merlin, send them on their adventures.

Who wrote and illustrated The Cat in the Hat?

Dr. Seuss (Theodor Geisel) wrote and drew The Cat in the Hat in 1957 using only 236 different words so that first graders could read it themselves.

Author Dav Pilkey created which book series?

Dav Pilkey dreamed up Captain Underpants in second grade while sitting in the hallway as punishment for disrupting class; the first book came out in 1997.

Who is the main character in Diary of a Wimpy Kid?

Greg insists that his book is a journal, not a diary, because a diary sounds too girly to him.

Who wrote the Junie B. Jones books?

Barbara Park wrote the Junie B. Jones books, starting with Junie B. Jones and the Stupid Smelly Bus in 1992; Junie B. moves from kindergarten to first grade partway through the series.

How many players does each soccer team have on the field at once?

Each soccer team fields 11 players, including the goalkeeper, the only player allowed to use their hands during play.

How many innings are in a regular baseball game?

Little League games are shorter, usually six innings, and a tied game keeps going into extra innings.

How many keys does a modern piano have?

A modern piano has 88 keys: 52 white and 36 black. The biggest concert grand pianos are more than nine feet long.

What is the only group of mammals that can truly fly?

Bats are the only mammals capable of true powered flight; their wings are long finger bones covered by thin skin. Flying squirrels and sugar gliders only glide.

Which bird is the smallest kind of bird in the world?

Hummingbirds include the world's smallest bird, Cuba's bee hummingbird, which is about 5.5 cm long and weighs under 2 grams.

Which is the biggest and heaviest bird alive today?

The ostrich is the biggest and heaviest living bird, standing up to 2.7 m tall and weighing over 100 kg; it cannot fly but can run at about 70 km/h.

Which big cat has stripes?

The tiger is the only big cat with stripes; each tiger's pattern is unique, and the stripes continue on its skin beneath the fur.

Koalas eat mostly the leaves of which tree?

Koalas eat mostly eucalyptus leaves, which give so little energy that they sleep up to 20 hours a day; they are marsupials, not bears.

Sloths spend most of their lives doing what?

They live in the rainforests of Central and South America.

Which is the largest animal that lives on land?

The African elephant is the largest land animal: bulls can weigh about 6 tonnes and stand over 3 m at the shoulder.

How many arms does an octopus have?

An octopus has eight arms, each lined with suckers; it can also squirt ink to escape predators.

What do honey bees collect from flowers to make honey?

Bees make honey from nectar, the sugary liquid they sip from flowers and store in their wax combs; pollen is gathered separately as protein for the hive.

A crocodile is what kind of animal?

A crocodile is a reptile: it is cold-blooded, has scaly skin and lays eggs on land, and lives in warm, tropical parts of the world.

What does a tortoise use its shell for?

A tortoise's shell is for protection from predators: it is made of bone covered in hard plates, and the tortoise pulls its head and legs inside when threatened.

A shark is what kind of animal?

A shark is a fish: it breathes through gills and has a skeleton made of cartilage instead of bone. Great white sharks can grow to about 6 m long.

A frog is what kind of animal?

The word for the frog group, Anura, means 'without tail'.

A snake's body is covered in what?

A snake's body is covered in scales made of keratin, the same material as your fingernails; the snake sheds this outer skin layer several times a year.

Penguins live almost only in which half of the world?

Nearly all penguins live in the Southern Hemisphere, from Antarctica to South Africa and Australia; the Galapagos penguin is the only kind that reaches the equator.

Owls mostly hunt at what time?

Most owls hunt at night: their big eyes gather dim light, and soft-edged feathers let them fly silently toward prey.

Which bird is the national bird of the United States?

The bald eagle has served as the national bird since 1782, when it was placed on the Great Seal of the United States.

What does a whale like the blue whale eat?

Blue whales eat krill, tiny shrimp-like animals, filtering up to about 4 tonnes of them a day through the baleen plates in their mouths.

Which force makes a rolling ball slow down on a flat floor?

Friction is the force that resists motion when two surfaces rub together; it is why a rolling ball slows down and why rubbing your hands warms them.

The Sun is mostly made of which gas?

Hydrogen makes up about 73% of the Sun's surface, and helium about 25%.

In which year did people first walk on the Moon?

Apollo 11 landed on July 20, 1969.

How many moons does Mars have?

They are called Phobos and Deimos.

Which planet spins on its side compared with the other planets?

Uranus is tilted about 98 degrees, so it rolls around the Sun almost on its side; each pole gets about 42 years of sunlight followed by 42 years of darkness.

Which planet is closest to the Sun?

Mercury is the closest planet to the Sun, orbiting at about 58 million km, and it circles the Sun once every 88 days.

Which planet is the hottest in the Solar System?

Venus is the hottest planet: its thick carbon dioxide atmosphere traps heat, keeping the surface at about 465 °C, hot enough to melt lead.

Which planet is the farthest from the Sun?

Neptune is the eighth planet.

What do you call a scientist who studies stars, planets and space?

An astronomer is a scientist who studies stars, planets and galaxies, usually through telescopes; Galileo, who turned a telescope to the sky in 1609, was an early one.

What is the name of the galaxy that our Solar System is in?

Our Solar System is in the Milky Way, a spiral galaxy of more than 100 billion stars that looks like a hazy band of light across the night sky.

Thomas Edison is famous for his work on which invention?

Edison's team produced a practical light bulb in 1879, with a carbon filament that glowed for many hours; he also invented the phonograph for playing recorded sound.

Alexander Graham Bell is credited with inventing what?

Bell received the first US patent for the telephone in March 1876 and days later made the famous call, "Mr. Watson, come here."

In which US state did the Wright brothers make their first flights in 1903?

The flights took place at Kill Devil Hills near Kitty Hawk, North Carolina, on December 17, 1903.

Isaac Newton is famous for explaining which force?

Newton described gravity as the force pulling every object toward every other, which keeps us on the ground; his ideas appeared in the 1687 book Principia.

George Washington led which side's soldiers in the American Revolutionary War?

Washington commanded the Patriots' Continental Army from 1775 to 1783 and accepted the British surrender at Yorktown in 1781.

Abraham Lincoln was born in a one-room log cabin in which state?

Lincoln was born on February 12, 1809, in a log cabin near Hodgenville, Kentucky; his family moved to Indiana when he was seven.

Who was the main writer of the Declaration of Independence in 1776?

Thomas Jefferson drafted the Declaration in June 1776 for the Committee of Five; Adams and Franklin suggested edits before Congress adopted it.

Which document begins with the words "We the People"?

The US Constitution opens with the preamble "We the People of the United States"; delegates signed it on September 17, 1787, and it took effect in 1789.

Harriet Tubman helped enslaved people escape using a secret network called what?

The Underground Railroad was a secret network of safe houses and guides; Tubman made about 13 trips on it and led roughly 70 people to freedom.

Who was the first American woman to fly in space, in 1983?

Sally Ride flew on Space Shuttle Challenger's STS-7 mission in June 1983, becoming the first American woman in space.

What was the first permanent English settlement in North America?

Jamestown, Virginia, founded in 1607, was the first permanent English settlement in North America; Plymouth followed in 1620.

What does the Statue of Liberty hold up high over her head?

Her right hand holds a torch high above her head as a symbol of enlightenment; the tablet in her left hand carries the date of the Declaration of Independence in Roman numerals.

In which city can you see the Liberty Bell?

The Liberty Bell sits in Philadelphia across from Independence Hall, in whose steeple it once hung; its famous crack dates from the 1840s.

What is the street address of the White House?

The White House is at 1600 Pennsylvania Avenue NW; every president since John Adams, who moved in during 1800, has lived there.

Mount Rushmore is in which US state?

Mount Rushmore is in the Black Hills of South Dakota; the granite faces of Washington, Jefferson, Theodore Roosevelt and Lincoln were carved between 1927 and 1941.

Which is the largest of the Great Lakes?

Lake Superior is the largest of the Great Lakes, about 82,000 square km, which makes it the biggest freshwater lake in the world by surface area.

How many Great Lakes are there?

They are Superior, Michigan, Huron, Erie and Ontario.

Old Faithful, a famous geyser, is in which national park?

Yellowstone was the world's first national park.

Mount Everest is part of which mountain range?

Everest is the highest peak of the Himalayas, the range running along the border of Nepal and China; its summit is 8,849 m above sea level.

Which is the largest country in the world by area?

Russia is the largest country by area, about 17 million square km, stretching across 11 time zones from Europe to the Pacific Ocean.

The Great Barrier Reef is off the coast of which Australian state?

The Great Barrier Reef runs about 2,300 km along the coast of Queensland in north-east Australia and is the largest structure built by living things.

What is the capital city of Canada?

Ottawa, in Ontario, became the capital in 1857 when Queen Victoria chose it; Toronto, Montreal and Vancouver are bigger cities.

What is the capital city of China?

Beijing is China's capital and home to the Forbidden City, the palace of emperors from 1420; Shanghai is the country's most populous city.

What is the capital city of Japan?

Tokyo became Japan's capital in 1868 when the emperor moved his court there from Kyoto, and the city was renamed from Edo.

What is the capital city of Egypt?

Cairo, on the banks of the Nile, was founded in 969 CE and became Egypt's capital; the Giza pyramids stand on its outskirts.

What is the capital city of Brazil?

Brasília was purpose-built as a new capital and inaugurated in 1960, replacing Rio de Janeiro; Lúcio Costa and Oscar Niemeyer designed its plan and buildings.

The Colosseum, an ancient arena, is in which city?

The Colosseum in Rome was completed in 80 CE under Emperor Titus and held about 50,000 spectators, making it the largest ancient amphitheatre ever built.

The Taj Mahal is in which country?

The Taj Mahal is in Agra, India; Mughal emperor Shah Jahan built the white marble mausoleum for his wife Mumtaz Mahal, finishing it around 1653.

The Great Wall is in which country?

The Great Wall of China's best-known sections were built by the Ming dynasty, between 1368 and 1644.

The Leaning Tower is in which Italian city?

The Leaning Tower of Pisa, a bell tower begun in 1173, started tilting during construction because of soft ground; engineers reduced the lean in the 1990s.

Big Ben in London is really the name of what?

The clock tower it hangs in is called the Elizabeth Tower.

Which animals alive today are actually a kind of dinosaur?

Birds are living theropod dinosaurs, descended from feathered relatives of Velociraptor; they were the only dinosaur lineage to survive the extinction 66 million years ago.

What does the name Triceratops mean?

Triceratops means 'three-horned face' in Greek, for its two long brow horns and one nose horn; it also had a large bony frill and walked on four legs.

What is the hot melted rock that pours out of a volcano called?

Molten rock that pours out of a volcano is called lava; underground, before it erupts, the same material is called magma.

What sound does lightning cause?

Thunder is the shock wave from air heated suddenly by the lightning, to about 30,000 °C.

In a rainbow, which color is on the outside of the arc?

Red is on the outside of a rainbow and violet on the inside, because red light bends the least as it passes through raindrops.

How many degrees do the three angles of a triangle add up to?

The three angles of any triangle add up to 180 degrees, the same as a straight line; the four angles of a square add up to 360.

How many sides does an octagon have?

Stop signs are shaped like octagons.

How many sides does a pentagon have?

The word comes from the Greek for 'five angles'.

Which word can take the place of a noun, like 'he' or 'she'?

Pronouns stand in for nouns or noun phrases.

Words that mean the same or almost the same thing are called what?

'Big' and 'large' are synonyms.

In Charlotte's Web, what kind of animal is Templeton?

Templeton is the greedy barn rat who brings Charlotte words from magazine scraps and gorges on leftovers at the county fair.

Who wrote the children's book Matilda?

Roald Dahl wrote Matilda in 1988, with Quentin Blake's illustrations; Matilda's school is run by the fearsome headmistress Miss Trunchbull.

In The BFG, what is the name of the girl the giant befriends?

Sophie, an orphan, is carried off from her bed by the Big Friendly Giant in the 1982 book; together they persuade the Queen of England to capture the man-eating giants.

In Charlie and the Chocolate Factory, who owns the chocolate factory?

Willy Wonka owns the factory and opens it to the five children who find Golden Tickets in his chocolate bars; Charlie Bucket finds the last one.

In the first Harry Potter book, Harry gets his Hogwarts letter on which birthday?

Hagrid hands Harry his Hogwarts letter at midnight on his eleventh birthday, July 31, because students start at Hogwarts at age eleven.

Who is the main character in The Hobbit?

Bilbo Baggins is the hobbit hired as a burglar by Thorin's thirteen dwarves to help recover their treasure from the dragon Smaug.

In Where the Wild Things Are, what costume does Max wear?

Max wears a white wolf suit in Maurice Sendak's 1963 book; after making mischief he is sent to bed without supper and sails to where the wild things are.

Who wrote and illustrated The Very Hungry Caterpillar?

Eric Carle wrote and illustrated The Very Hungry Caterpillar in 1969 with his painted tissue-paper collages; the caterpillar eats through the pages before becoming a butterfly.

Which character keeps asking someone to try green eggs and ham in the Dr. Seuss book?

Sam-I-am pesters the narrator to try green eggs and ham; the 1960 book uses only 50 different words, written after a bet with the publisher.

How many strings does a violin usually have?

A violin usually has four strings, tuned G, D, A and E, played by drawing a bow across them.

The composer Beethoven came from which country?

Beethoven was born in Bonn, Germany, in 1770 and later moved to Vienna, where he composed his nine symphonies.

Which famous artist painted the Mona Lisa?

Leonardo da Vinci painted the Mona Lisa in the early 1500s; it hangs in the Louvre museum in Paris.

The painter Vincent van Gogh came from which country?

Vincent van Gogh was born in Zundert in the Netherlands in 1853; he made about 2,100 artworks in just over ten years, mostly in France.

How often are the Summer Olympic Games held?

The Winter Games are also held every four years, two years apart from the Summer Games.

How many players from each team are on a basketball court at one time?

Basketball was invented in 1891 by James Naismith.

How many players are on a baseball team on the field?

A baseball team fields nine players: the pitcher, the catcher, four infielders and three outfielders.

In which sport do players hit a shuttlecock over a net?

Badminton is played with rackets and a feathered shuttlecock over a high net; it became an Olympic sport at the 1992 Barcelona Games.

Golf was first played in the 15th century in which country?

Scotland is 'the home of golf': the first written record is a 1457 Scottish law banning the game, and the Old Course at St Andrews dates from the 1500s.

Who built the first printing press with movable type in Europe, around 1440?

Johannes Gutenberg built a movable-type printing press in Mainz, Germany, around 1440; his Gutenberg Bible of about 1455 was the first major book printed with it.

Which nutrient, named with a letter, is found in oranges and other citrus fruits?

Oranges and other citrus fruits are rich in vitamin C; without enough of it people develop scurvy, which once plagued sailors on long voyages.

What does blood carry to all the cells in your body?

Blood carries nutrients from digested food and oxygen to every cell, and carries waste such as carbon dioxide away from them.

How much of Earth's surface is covered by water?

Water covers roughly 71% of Earth's surface, and about 97% of that water is salt water in the seas and oceans.

What is the chemical formula for water?

Each molecule has two hydrogen atoms and one oxygen atom.

What is the chemical symbol for gold?

Gold's symbol is Au, from its Latin name aurum; silver's symbol Ag comes from argentum.

Helium, the gas used in party balloons, is what kind of gas?

It is colorless, odorless and does not burn.

DNA, found in living things, has a twisted shape called what?

DNA is a double helix: two chains coil around each other, a structure Watson and Crick described in 1953 using Rosalind Franklin's X-ray images.

The imaginary line around the middle of Earth is called what?

The equator is the imaginary line at 0° latitude circling Earth midway between the poles, dividing it into the Northern and Southern Hemispheres.

Which scientist is famous for the idea of evolution by natural selection?

Charles Darwin set out evolution by natural selection in On the Origin of Species (1859), after his five-year voyage around the world on HMS Beagle.

What is the hardest natural material on the Mohs scale?

Diamond packs more atoms into each bit of space than any other known substance, which is why it is so hard and so difficult to squeeze.

Which is the smallest and shallowest of the world's five oceans?

The Arctic Ocean covers about 14 million square kilometres around the North Pole, is mostly under sea ice in winter, and averages only about 1,000 m deep.

Which bird is often called the fastest animal on Earth because of its high-speed dive?

The peregrine falcon dives in a 'stoop' at over 320 km/h (200 mph); one trained bird was clocked at 389 km/h, the fastest speed recorded for any animal.

What is a baby kangaroo called?

Joeys finish growing inside their mother's pouch; a group of kangaroos is called a mob, court or troupe.

How many lungs does a person have?

Two lungs, but the right one is bigger than the left, which leaves room for the heart; the diaphragm muscle does most of the work of breathing.