How much do you know about the biggest geographical features on Earth?


By: John Miller

6 Min Quiz

Image: Shutterstock

About This Quiz

From soaring mountains to seemingly bottomless seas, Mother Earth has some truly enormous features that are both awe-inspiring and daunting. How much do you know about the planet's biggest geographic features?

From sea level to peak, what's the tallest mountain in the world?

Measured from sea level to summit, Mount Everest is the world's tallest mountain. It scrapes the sky, towering more than 29,000 feet into the atmosphere.


What's the biggest ocean on Earth?

The Pacific Ocean is the world's largest ocean. It covers nearly one-third of the entire planet. So if you find yourself adrift and lost in an ocean, you don't want it to be the Pacific.


The Pacific Ocean is so big that it encompasses about 75 percent of the world's _____.

The infamous Ring of Fire, in the Pacific Ocean, is a 25,000-mile long geographical feature that has more than 400 active volcanoes. That's three-quarters of the active volcanoes on the planet.


Where would you find the world's biggest glacier?

Lambert Glacier in East Antarctica is the world's biggest glacier. It's 60 miles wide, and in some points, it's 250 miles long. It's also one of the world's fastest glaciers, in some places zipping along at about 2,600 feet per year.


What is the world's biggest continent?

Asia is more than 17 million square miles. By comparison, North American is less than 10 million square miles. Australia? Less than 3 million square miles.


The Sahara Desert is the biggest desert on which continent?

By area, the Sahara is the world's third-largest desert, and it stretches across most of North Africa. Notably, the Sahara is the world's largest hot desert, famed and feared for killing many people and animals that dare explore its sands.


Where would you find the world's largest gulf?

The Gulf of Mexico is the world's largest gulf. It covers about 600,000 square miles, which makes it the ninth-biggest body of water on Earth.


Where would you find the world's largest active volcano?

Hawaii is the home of Mauna Loa, which is nearly 13,700 feet tall from sea level. In 1902, it uncorked a massive eruption that still ranks as one of the top five most powerful eruptions of the past two centuries.


Mauna Kea, in Hawaii, is a huge mountain, but much of its base is hidden where?

Mauna Kea is one of the world's most impressive mountains, but it doesn't always get credit for its immensity because much of the mountain's base is under water. From sea floor to peak, it is 33,000 feet tall ... taller even than Mount Everest.


What's the biggest island on Earth?

Greenland is the world's largest island ... but it's anything but green. The vast majority of the island's 836,000 square miles is covered by ice.


At its widest, how wide is the Caspian Sea?

The Caspian Sea is about 435 miles at its widest point. It contains perhaps 40 percent of the world's total lake water.


What makes the Amazon River famous?

At about 4,345 miles long, the Amazon is the longest river in the world. By comparison, the distance from New York to Paris is merely 3,600 miles.


Antarctica is the world's largest _____.

The Maudlandia area of Antarctica is the world's largest desert. It's a 5.5-million square mile monstrosity, most of which has never been touched by human feet or vehicles.


The Amazon River is the world's longest river. During flood season, it can be how many miles wide?

During flood season, the Amazon River is wider than some rivers are long. It can be about 120 miles wide, sweeping aside just about anything in its path.


Puncak Jaya is a mountain in Indonesia. It is the tallest _____ peak in the entire world.

Puncak Jaya is a monstrous island peak in Indonesia. Beginning at sea level, the jagged peaks reach to more than 16,000 feet high.


The Amazon River is more than 4,000 miles long. How many bridges cross the river?

There are no bridges across the Amazon, primarily because the river runs through so much remote rainforest. Locals use ferries to cross the gigantic river.


What's amazing about the Bay of Bengal?

The Bay of Bengal is the world's biggest bay, covering roughly 840,000 square miles. It has an average depth of 8,500 feet -- and it's nearly 1,000 miles wide.


Where would you find the world's largest rainforest?

The Amazon River basin in South America is home to the largest rainforest on Earth. It covers parts of territory belonging to nine countries on the continent.


The Amazon rainforest is so vast that it has an estimated ________ individual trees.

There are about 16,000 species of trees in the Amazon rainforest. And some scientists estimate there may be nearly 400 billion individual trees in the area.


True or false, is the Caspian Sea actually a sea?

Sure, they call it a sea just to throw you off. The Caspian Sea is a really a lake. By area, it's the world's largest lake.


True or false, by volume, is Lake Superior the biggest lake in North America?

By volume, Lake Superior is by far the biggest lake in North America. It contains more water than the other four Great Lakes combined.


Where would you find the world's largest coral reef?

Australia is home to the Great Barrier Reef, the largest reef in the world. It's visible from outer space -- and scientists call it the largest organism on Earth.


Scientists call the Great Barrier Reef the largest living structure on Earth. How long is the reef?

The reef is a combination of nearly 3,000 individual reefs that stretch for about 1,400 miles. As the planet's oceans rise in temperature, they threaten to kill coral, and the Barrier Reef is no exception.


What's the name of the deepest part of the ocean?

The Challenger Deep, in the Pacific Ocean, is the deepest part of the ocean anywhere on Earth. It's nearly 36,000 feet deep, which is more than 6.5 miles.


Lake Baikal, in Russia, is known for which trait?

Lake Baikal is the world's deepest lake. It is nearly 5,400 feet deep in places, so if you drop your keys overboard, let 'em go because man, they're gone.


What's special about Peru's Cotahuasi Canyon?

According to some experts, the Cotahuasi Canyon is the deepest canyon in the world. At two miles deep, it's more than twice as deep as the Grand Canyon.


The Caspian Sea is the world's largest lake by area. What's the lake's deepest point?

The Caspian Sea is no shallow puddle. It's a sprawling body of water that is in places more than 3,360 feet deep.


The Pantanal, in South America, is the world's largest _____.

The Pantanal, which is mostly in Brazil, is the world's biggest swamp. It covers perhaps 75,000 square miles and is home to thousands of species of plants and animals.


Angel Falls is the tallest waterfall in the world. How tall is this fantastic waterfall?

Angel Falls is the world's tallest uninterrupted waterfall, and it's located in Venezuela. It's more than 3,200 feet tall, and even though it is in a remote area, it's one of the country's most popular tourist destinations.


Where would you find the longest canyon on Earth?

Greenland's Grand Canyon is more than 460 miles long. The impressive chasm is Earth's longest, but you'll never see it -- it's located under a massive sheet of ice.


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