Countries And Continents Practice Exam

Question 1 Countries And Continents

What are the five major climate zones?

The Pacific Ocean is the largest and deepest ocean, covering about 165.25 million km² — more than 30% of the Earth's surface. A savanna (or tropical grassland) is a biome with a mix of grasses and scattered trees. It has distinct wet and dry seasons and is found in Africa, South America, and Australia. Lake Titicaca, on the border of Peru and Bolivia, sits at about 3,812 meters above sea level. It is the largest lake in South America by volume. The five major climate zones are: Tropical, Dry (Arid), Temperate, Continental, and Polar. This classification is based on the Köppen climate system.

Question 2 Countries And Continents

What is the difference between a gulf and a bay?

The Yangtze River (Chang Jiang) is the longest river in Asia at about 6,300 km. It flows entirely within China from the Tibetan Plateau to the East China Sea. Denali (formerly Mount McKinley) in Alaska stands at 6,190 meters. It has the largest base-to-peak rise of any mountain on Earth's surface. Both are bodies of water partially enclosed by land. A gulf is generally larger, more deeply indented, and more enclosed than a bay, though the terms are sometimes used interchangeably. Sicily is the largest Mediterranean island at about 25,711 km². It belongs to Italy and is separated from the mainland by the Strait of Messina.

Question 3 Countries And Continents

What is the highest mountain in North America?

Pangaea was a supercontinent that existed about 335–175 million years ago, containing most of Earth's landmass. It broke apart into Laurasia (north) and Gondwana (south) due to plate tectonics. Denali (formerly Mount McKinley) in Alaska stands at 6,190 meters. It has the largest base-to-peak rise of any mountain on Earth's surface. The five major climate zones are: Tropical, Dry (Arid), Temperate, Continental, and Polar. This classification is based on the Köppen climate system. An archipelago is a chain, cluster, or collection of islands. Examples include Indonesia (the world's largest archipelago), the Philippines, Japan, and the Maldives.

Question 4 Countries And Continents

What is the largest desert in the world?

The Antarctic Polar Desert is technically the largest at about 14.2 million km². Among hot deserts, the Sahara is the largest at about 9.2 million km². The San Andreas Fault is a transform plate boundary in California, about 1,200 km long. It marks where the Pacific Plate and the North American Plate slide past each other. Africa has the most countries with 54 recognized sovereign states. It is also the second-largest and second-most-populous continent. The Arctic Circle is at approximately 66.5°N latitude. North of this line, there is at least one day per year of continuous daylight (midnight sun) and one day of continuous darkness (polar night).

Question 5 Countries And Continents

What is the largest country in Europe by area?

A strait is a narrow passage of water connecting two larger bodies of water. Examples include the Strait of Gibraltar, the Strait of Malacca, and the Bering Strait. Kazakhstan is the world's largest landlocked country at about 2.72 million km². It is located in Central Asia and borders Russia, China, and three other countries. Latitude measures how far north or south a point is from the Equator, expressed in degrees from 0° (Equator) to 90° (poles). Lines of latitude run east-west and are called parallels. Ukraine is the largest country entirely within Europe at about 603,500 km². If European Russia is included, Russia's European portion is much larger.

Question 6 Countries And Continents

What is the largest island in the world?

The Dry Valleys of Antarctica are considered the driest place, having received virtually no precipitation for about 2 million years. Among inhabited places, the Atacama Desert in Chile is the driest. The five major climate zones are: Tropical, Dry (Arid), Temperate, Continental, and Polar. This classification is based on the Köppen climate system. Greenland is the largest island at about 2.17 million km² (Australia is considered a continent, not an island). It is an autonomous territory of Denmark. Weather is the short-term state of the atmosphere (hours to days), while climate is the average of weather patterns over long periods (typically 30+ years) for a region.

Question 7 Countries And Continents

What is the Amazon Rainforest?

The Yangtze River (Chang Jiang) is the longest river in Asia at about 6,300 km. It flows entirely within China from the Tibetan Plateau to the East China Sea. A delta is a landform created by sediment deposition where a river meets a slower-moving or standing body of water. The Nile Delta, Ganges Delta, and Mississippi Delta are famous examples. The Amazon Rainforest covers about 5.5 million km², spanning nine countries in South America. It is the world's largest tropical rainforest and produces about 6% of the world's oxygen. The Arctic Ocean is the smallest and shallowest ocean at about 14.06 million km². It is mostly covered by sea ice, especially in winter.

Question 8 Countries And Continents

What is the largest country in the world by area?

Permafrost is ground that remains frozen for at least two consecutive years. It is found primarily in polar regions and covers about 25% of the Northern Hemisphere's land surface. The Arctic Ocean is the smallest and shallowest ocean at about 14.06 million km². It is mostly covered by sea ice, especially in winter. The Amazon Rainforest covers about 5.5 million km², spanning nine countries in South America. It is the world's largest tropical rainforest and produces about 6% of the world's oxygen. Russia is the largest country at approximately 17.1 million km², spanning Eastern Europe and northern Asia across 11 time zones.

Question 9 Countries And Continents

What is the most populous country in Africa?

The Alps are the highest and most extensive mountain range in Europe, stretching about 1,200 km across eight countries. Mont Blanc (4,809 m) is the highest peak. Nigeria is the most populous African country with over 220 million people. It is projected to become one of the top three most populous countries globally by 2050. The Andes in South America extend about 7,000 km along the western coast from Venezuela to southern Chile. They are the longest continental mountain range. The Great Lakes are five large freshwater lakes: Superior, Michigan, Huron, Erie, and Ontario (remembered by the acronym HOMES). Together they hold about 21% of the world's surface fresh water.

Question 10 Countries And Continents

What is the second-largest country in the world by area?

Algeria is the largest country in Africa at about 2.38 million km², located in North Africa along the Mediterranean coast. The Great Barrier Reef off northeastern Australia is the world's largest coral reef system, stretching about 2,300 km. It is visible from space and is a UNESCO World Heritage Site. Latitude measures how far north or south a point is from the Equator, expressed in degrees from 0° (Equator) to 90° (poles). Lines of latitude run east-west and are called parallels. Canada is the second-largest country at about 10 million km². It has the longest coastline of any country in the world.

Question 11 Countries And Continents

What is the Panama Canal?

The United States (including Alaska and Hawaii) is the third-largest at about 9.8 million km², though China is nearly the same size depending on measurement methods. There are 5 recognized oceans: Pacific, Atlantic, Indian, Southern (Antarctic), and Arctic. The Pacific is the largest, covering more area than all the land on Earth combined. The Panama Canal is a 77 km artificial waterway in Panama connecting the Atlantic and Pacific Oceans. Completed in 1914, it revolutionized global shipping by eliminating the need to sail around South America. Angel Falls (Salto Ángel) in Venezuela is the world's highest uninterrupted waterfall at 979 meters (3,212 feet). It drops from the edge of the Auyán-tepui mountain.

Question 12 Countries And Continents

What is the Equator?

The Mariana Trench is the deepest oceanic trench, located in the western Pacific Ocean east of the Mariana Islands. Its deepest point, the Challenger Deep, is about 10,935 meters below sea level. The Atacama Desert in Chile is considered the driest non-polar desert on Earth. Some weather stations there have never recorded rainfall. It is also a prime location for astronomical observatories. The Antarctic Polar Desert is technically the largest at about 14.2 million km². Among hot deserts, the Sahara is the largest at about 9.2 million km². The Equator is an imaginary line at 0° latitude that divides the Earth into the Northern and Southern Hemispheres. It is about 40,075 km long and passes through 13 countries.

Question 13 Countries And Continents

What is the largest ocean?

Canada is the second-largest country at about 10 million km². It has the longest coastline of any country in the world. The Volga River is the longest river in Europe at about 3,530 km. It flows through central Russia and empties into the Caspian Sea. The Panama Canal is a 77 km artificial waterway in Panama connecting the Atlantic and Pacific Oceans. Completed in 1914, it revolutionized global shipping by eliminating the need to sail around South America. The Pacific Ocean is the largest and deepest ocean, covering about 165.25 million km² — more than 30% of the Earth's surface.

Question 14 Countries And Continents

What is a savanna biome?

A savanna (or tropical grassland) is a biome with a mix of grasses and scattered trees. It has distinct wet and dry seasons and is found in Africa, South America, and Australia. The Alps are the highest and most extensive mountain range in Europe, stretching about 1,200 km across eight countries. Mont Blanc (4,809 m) is the highest peak. The Great Wall of China stretches over 21,000 km including all its branches and sections built over many centuries. The most well-known sections were built during the Ming Dynasty. The Philippine Sea is the largest marginal sea at about 5.7 million km², located in the western Pacific Ocean east of the Philippines.

Question 15 Countries And Continents

What is the most populous country in the world?

Permafrost is ground that remains frozen for at least two consecutive years. It is found primarily in polar regions and covers about 25% of the Northern Hemisphere's land surface. Ukraine is the largest country entirely within Europe at about 603,500 km². If European Russia is included, Russia's European portion is much larger. India surpassed China as the most populous country in 2023, with over 1.4 billion people. China remains close behind with a similar population. The Great Rift Valley is a continuous geographic trench running from Lebanon's Beqaa Valley to Mozambique in southeastern Africa. It is caused by tectonic plate divergence and contains many lakes and volcanoes.

Question 16 Countries And Continents

What is the largest freshwater lake by surface area?

The Yangtze River (Chang Jiang) is the longest river in Asia at about 6,300 km. It flows entirely within China from the Tibetan Plateau to the East China Sea. Lake Superior in North America is the largest freshwater lake by surface area at about 82,100 km². It is one of the five Great Lakes. There are 7 major tectonic plates: Pacific, North American, Eurasian, African, Antarctic, Indo-Australian, and South American. There are also several minor plates. The Volga River is the longest river in Europe at about 3,530 km. It flows through central Russia and empties into the Caspian Sea.

Question 17 Countries And Continents

What is the largest plateau in the world?

Both are bodies of water partially enclosed by land. A gulf is generally larger, more deeply indented, and more enclosed than a bay, though the terms are sometimes used interchangeably. The Danube River flows through or borders four capital cities: Vienna, Bratislava, Budapest, and Belgrade. It is the second-longest river in Europe at about 2,850 km. The Arctic Ocean is the smallest and shallowest ocean at about 14.06 million km². It is mostly covered by sea ice, especially in winter. The Tibetan Plateau is the largest and highest plateau, with an average elevation exceeding 4,500 meters. It is often called the "Roof of the World."

Question 18 Countries And Continents

What is the Great Barrier Reef?

There are 7 continents: Africa, Antarctica, Asia, Australia (Oceania), Europe, North America, and South America. Together they make up all the landmass on Earth. Pangaea was a supercontinent that existed about 335–175 million years ago, containing most of Earth's landmass. It broke apart into Laurasia (north) and Gondwana (south) due to plate tectonics. The Great Barrier Reef off northeastern Australia is the world's largest coral reef system, stretching about 2,300 km. It is visible from space and is a UNESCO World Heritage Site. The Tibetan Plateau is the largest and highest plateau, with an average elevation exceeding 4,500 meters. It is often called the "Roof of the World."

Question 19 Countries And Continents

What is the largest lake in Africa?

The Pacific Ocean is the largest and deepest ocean, covering about 165.25 million km² — more than 30% of the Earth's surface. There are 7 major tectonic plates: Pacific, North American, Eurasian, African, Antarctic, Indo-Australian, and South American. There are also several minor plates. The Tropic of Capricorn is at approximately 23.5°S latitude. It is the southernmost latitude where the Sun can appear directly overhead, during the December solstice. Lake Victoria is the largest lake in Africa by surface area at about 68,800 km². It is bordered by Uganda, Kenya, and Tanzania and is a source of the Nile.

Question 20 Countries And Continents

What is an atoll?

An atoll is a ring-shaped coral reef or island encircling a lagoon. Atolls form when coral grows around a volcanic island that later sinks, leaving the reef ring. The Maldives are mostly atolls. Asia is the largest continent, covering about 44.6 million km² — roughly 30% of the Earth's total land area. The Antarctic Circle is at approximately 66.5°S latitude. South of it, there is at least one 24-hour period of continuous sunlight and one of continuous darkness each year. Mount Elbrus in Russia's Caucasus Mountains stands at 5,642 meters. If only Western Europe is considered, Mont Blanc (4,809 m) in the Alps is the highest.

Question 21 Countries And Continents

What is the largest island in the Mediterranean Sea?

Longitude measures how far east or west a point is from the Prime Meridian, expressed in degrees from 0° to 180°. Lines of longitude run north-south and are called meridians. Latitude measures how far north or south a point is from the Equator, expressed in degrees from 0° (Equator) to 90° (poles). Lines of latitude run east-west and are called parallels. There are 7 continents: Africa, Antarctica, Asia, Australia (Oceania), Europe, North America, and South America. Together they make up all the landmass on Earth. Sicily is the largest Mediterranean island at about 25,711 km². It belongs to Italy and is separated from the mainland by the Strait of Messina.

Question 22 Countries And Continents

What is the Caspian Sea?

The Mariana Trench is the deepest oceanic trench, located in the western Pacific Ocean east of the Mariana Islands. Its deepest point, the Challenger Deep, is about 10,935 meters below sea level. At convergent boundaries, two tectonic plates move toward each other. This can create mountain ranges (e.g., the Himalayas), volcanic arcs, or deep ocean trenches through subduction. The Alps are the highest and most extensive mountain range in Europe, stretching about 1,200 km across eight countries. Mont Blanc (4,809 m) is the highest peak. The Caspian Sea is the world's largest enclosed inland body of water, covering about 371,000 km². Despite its name, it is technically a lake bordered by five countries.

Question 23 Countries And Continents

What is the largest river by volume of water discharge?

The Amazon River in South America has the greatest discharge, releasing about 209,000 m³/s into the Atlantic Ocean — more than the next seven largest rivers combined. Asia is the largest continent, covering about 44.6 million km² — roughly 30% of the Earth's total land area. Denali (formerly Mount McKinley) in Alaska stands at 6,190 meters. It has the largest base-to-peak rise of any mountain on Earth's surface. The Dead Sea is a hypersaline lake bordered by Jordan, Israel, and the West Bank. Its surface is about 430 meters below sea level, making it the lowest land-based elevation on Earth.

Question 24 Countries And Continents

How many oceans are there, and what are they?

The five major climate zones are: Tropical, Dry (Arid), Temperate, Continental, and Polar. This classification is based on the Köppen climate system. The United States (including Alaska and Hawaii) is the third-largest at about 9.8 million km², though China is nearly the same size depending on measurement methods. The Yangtze River (Chang Jiang) is the longest river in Asia at about 6,300 km. It flows entirely within China from the Tibetan Plateau to the East China Sea. There are 5 recognized oceans: Pacific, Atlantic, Indian, Southern (Antarctic), and Arctic. The Pacific is the largest, covering more area than all the land on Earth combined.

Question 25 Countries And Continents

What is the coldest temperature ever recorded on Earth?

A continental divide is a ridge of high ground that separates river systems flowing to different sides of a continent. In North America, the Great Divide runs along the Rocky Mountains. The lowest recorded temperature is −89.2°C (−128.6°F), measured at the Soviet Vostok Station in Antarctica on July 21, 1983. Permafrost is ground that remains frozen for at least two consecutive years. It is found primarily in polar regions and covers about 25% of the Northern Hemisphere's land surface. Canada has the longest coastline at about 202,080 km, including its mainland and island coasts. This is largely due to its extensive Arctic archipelago.

Question 26 Countries And Continents

What is the third-largest country in the world by area?

The Sahara is the world's largest hot desert, covering about 9.2 million km² across North Africa. It spans 11 countries and is roughly the size of the United States. The Andes in South America extend about 7,000 km along the western coast from Venezuela to southern Chile. They are the longest continental mountain range. A strait is a narrow passage of water connecting two larger bodies of water. Examples include the Strait of Gibraltar, the Strait of Malacca, and the Bering Strait. The United States (including Alaska and Hawaii) is the third-largest at about 9.8 million km², though China is nearly the same size depending on measurement methods.

Question 27 Countries And Continents

What is the deepest lake in the world?

Lake Baikal in Siberia, Russia, is the deepest lake at about 1,642 meters deep. It contains about 20% of the world's unfrozen surface fresh water. Mount Everest in the Himalayas stands at 8,849 meters (29,032 feet) above sea level. It sits on the border between Nepal and Tibet (China). The Suez Canal is a 193 km artificial waterway in Egypt connecting the Mediterranean Sea to the Red Sea. Opened in 1869, it provides the shortest maritime route between Europe and Asia. The Great Rift Valley is a continuous geographic trench running from Lebanon's Beqaa Valley to Mozambique in southeastern Africa. It is caused by tectonic plate divergence and contains many lakes and volcanoes.

Question 28 Countries And Continents

What is the longest river in Asia?

The Yangtze River (Chang Jiang) is the longest river in Asia at about 6,300 km. It flows entirely within China from the Tibetan Plateau to the East China Sea. Mount Everest in the Himalayas stands at 8,849 meters (29,032 feet) above sea level. It sits on the border between Nepal and Tibet (China). New Guinea is the second-largest island at about 786,000 km². It is divided between Papua New Guinea (east) and Indonesian provinces (west). Mauna Loa in Hawaii is the largest active volcano on Earth by volume and area, rising about 4,169 m above sea level. Measured from its base on the ocean floor, it stands over 9,000 m tall.

Question 29 Countries And Continents

What is the Ring of Fire?

The Ring of Fire is a horseshoe-shaped zone around the Pacific Ocean where about 75% of the world's volcanoes are found and about 90% of earthquakes occur. It stretches about 40,000 km. Mauna Loa in Hawaii is the largest active volcano on Earth by volume and area, rising about 4,169 m above sea level. Measured from its base on the ocean floor, it stands over 9,000 m tall. Sicily is the largest Mediterranean island at about 25,711 km². It belongs to Italy and is separated from the mainland by the Strait of Messina. A savanna (or tropical grassland) is a biome with a mix of grasses and scattered trees. It has distinct wet and dry seasons and is found in Africa, South America, and Australia.

Question 30 Countries And Continents

How many continents are there, and what are they?

The Panama Canal is a 77 km artificial waterway in Panama connecting the Atlantic and Pacific Oceans. Completed in 1914, it revolutionized global shipping by eliminating the need to sail around South America. The Pacific Ocean is the largest and deepest ocean, covering about 165.25 million km² — more than 30% of the Earth's surface. There are 7 continents: Africa, Antarctica, Asia, Australia (Oceania), Europe, North America, and South America. Together they make up all the landmass on Earth. Kazakhstan is the world's largest landlocked country at about 2.72 million km². It is located in Central Asia and borders Russia, China, and three other countries.

Question 31 Countries And Continents

What is the San Andreas Fault?

Algeria is the largest country in Africa at about 2.38 million km², located in North Africa along the Mediterranean coast. Both are bodies of water partially enclosed by land. A gulf is generally larger, more deeply indented, and more enclosed than a bay, though the terms are sometimes used interchangeably. An archipelago is a chain, cluster, or collection of islands. Examples include Indonesia (the world's largest archipelago), the Philippines, Japan, and the Maldives. The San Andreas Fault is a transform plate boundary in California, about 1,200 km long. It marks where the Pacific Plate and the North American Plate slide past each other.

Question 32 Countries And Continents

What is the difference between weather and climate?

India surpassed China as the most populous country in 2023, with over 1.4 billion people. China remains close behind with a similar population. Weather is the short-term state of the atmosphere (hours to days), while climate is the average of weather patterns over long periods (typically 30+ years) for a region. The Great Barrier Reef off northeastern Australia is the world's largest coral reef system, stretching about 2,300 km. It is visible from space and is a UNESCO World Heritage Site. The Caspian Sea is the world's largest enclosed inland body of water, covering about 371,000 km². Despite its name, it is technically a lake bordered by five countries.

Question 33 Countries And Continents

What is Pangaea?

Mount Everest in the Himalayas stands at 8,849 meters (29,032 feet) above sea level. It sits on the border between Nepal and Tibet (China). Lake Baikal in Siberia, Russia, is the deepest lake at about 1,642 meters deep. It contains about 20% of the world's unfrozen surface fresh water. Pangaea was a supercontinent that existed about 335–175 million years ago, containing most of Earth's landmass. It broke apart into Laurasia (north) and Gondwana (south) due to plate tectonics. The Prime Meridian is the 0° longitude line running from the North Pole to the South Pole through Greenwich, London. It divides the Earth into the Eastern and Western Hemispheres.

Question 34 Countries And Continents

What is the Atacama Desert known for?

The Atacama Desert in Chile is considered the driest non-polar desert on Earth. Some weather stations there have never recorded rainfall. It is also a prime location for astronomical observatories. The tundra is a treeless biome found in polar regions and high mountains, characterized by permafrost, very low temperatures, and limited vegetation like mosses, lichens, and small shrubs. Mawsynram in Meghalaya, India, holds the record for highest average annual rainfall at about 11,871 mm (467 inches). Nearby Cherrapunji is also extremely wet. Lake Victoria is the largest lake in Africa by surface area at about 68,800 km². It is bordered by Uganda, Kenya, and Tanzania and is a source of the Nile.

Question 35 Countries And Continents

What is the hottest temperature ever recorded on Earth?

Vatican City is the smallest country at about 0.44 km² (110 acres). It is an independent city-state enclaved within Rome, Italy, and is the headquarters of the Roman Catholic Church. The highest reliably recorded temperature is 56.7°C (134°F), measured at Furnace Creek in Death Valley, California, USA, on July 10, 1913. Weather is the short-term state of the atmosphere (hours to days), while climate is the average of weather patterns over long periods (typically 30+ years) for a region. Mawsynram in Meghalaya, India, holds the record for highest average annual rainfall at about 11,871 mm (467 inches). Nearby Cherrapunji is also extremely wet.

Question 36 Countries And Continents

What is the Arctic Circle?

A continental divide is a ridge of high ground that separates river systems flowing to different sides of a continent. In North America, the Great Divide runs along the Rocky Mountains. The Great Rift Valley is a continuous geographic trench running from Lebanon's Beqaa Valley to Mozambique in southeastern Africa. It is caused by tectonic plate divergence and contains many lakes and volcanoes. The Tropic of Cancer is at approximately 23.5°N latitude. It is the northernmost latitude where the Sun can appear directly overhead, which occurs during the June solstice. The Arctic Circle is at approximately 66.5°N latitude. North of this line, there is at least one day per year of continuous daylight (midnight sun) and one day of continuous darkness (polar night).

Question 37 Countries And Continents

What is the wettest place on Earth?

Africa has the most countries with 54 recognized sovereign states. It is also the second-largest and second-most-populous continent. The Challenger Deep in the Mariana Trench (Pacific Ocean) is the deepest known point at about 10,935 meters (35,876 feet) below sea level. The Prime Meridian is the 0° longitude line running from the North Pole to the South Pole through Greenwich, London. It divides the Earth into the Eastern and Western Hemispheres. Mawsynram in Meghalaya, India, holds the record for highest average annual rainfall at about 11,871 mm (467 inches). Nearby Cherrapunji is also extremely wet.

Question 38 Countries And Continents

What is the second-largest island in the world?

Canada is the second-largest country at about 10 million km². It has the longest coastline of any country in the world. New Guinea is the second-largest island at about 786,000 km². It is divided between Papua New Guinea (east) and Indonesian provinces (west). The Philippine Sea is the largest marginal sea at about 5.7 million km², located in the western Pacific Ocean east of the Philippines. The Great Wall of China stretches over 21,000 km including all its branches and sections built over many centuries. The most well-known sections were built during the Ming Dynasty.

Question 39 Countries And Continents

What are the Alps?

Russia is the largest country at approximately 17.1 million km², spanning Eastern Europe and northern Asia across 11 time zones. Tectonic plates are massive segments of Earth's lithosphere that move, float, and interact on the semi-fluid asthenosphere. Their movements cause earthquakes, volcanic activity, and mountain formation. The Mediterranean Sea is a nearly landlocked sea connected to the Atlantic Ocean by the Strait of Gibraltar. It is bordered by Europe, Africa, and Asia, covering about 2.5 million km². The Alps are the highest and most extensive mountain range in Europe, stretching about 1,200 km across eight countries. Mont Blanc (4,809 m) is the highest peak.

Question 40 Countries And Continents

What is the Strait of Gibraltar?

The Yangtze River (Chang Jiang) is the longest river in Asia at about 6,300 km. It flows entirely within China from the Tibetan Plateau to the East China Sea. The Panama Canal is a 77 km artificial waterway in Panama connecting the Atlantic and Pacific Oceans. Completed in 1914, it revolutionized global shipping by eliminating the need to sail around South America. The Strait of Gibraltar is a narrow waterway separating Europe (Spain) from Africa (Morocco). It connects the Atlantic Ocean to the Mediterranean Sea and is only about 14 km wide at its narrowest. Lake Superior in North America is the largest freshwater lake by surface area at about 82,100 km². It is one of the five Great Lakes.

Question 41 Countries And Continents

What is a tropical climate?

The tundra is a treeless biome found in polar regions and high mountains, characterized by permafrost, very low temperatures, and limited vegetation like mosses, lichens, and small shrubs. The Tropic of Capricorn is at approximately 23.5°S latitude. It is the southernmost latitude where the Sun can appear directly overhead, during the December solstice. A tropical climate (Köppen group A) has warm temperatures year-round with average monthly temperatures above 18°C. It is found near the Equator and includes rainforest, monsoon, and savanna subtypes. Lake Baikal in Siberia, Russia, is the deepest lake at about 1,642 meters deep. It contains about 20% of the world's unfrozen surface fresh water.

Question 42 Countries And Continents

What is the Mariana Trench?

The lowest recorded temperature is −89.2°C (−128.6°F), measured at the Soviet Vostok Station in Antarctica on July 21, 1983. The Alps are the highest and most extensive mountain range in Europe, stretching about 1,200 km across eight countries. Mont Blanc (4,809 m) is the highest peak. The Andes in South America extend about 7,000 km along the western coast from Venezuela to southern Chile. They are the longest continental mountain range. The Mariana Trench is the deepest oceanic trench, located in the western Pacific Ocean east of the Mariana Islands. Its deepest point, the Challenger Deep, is about 10,935 meters below sea level.

Question 43 Countries And Continents

What is the Tropic of Cancer?

The Volga River is the longest river in Europe at about 3,530 km. It flows through central Russia and empties into the Caspian Sea. A peninsula is a landmass surrounded by water on three sides but connected to the mainland. Examples include the Iberian Peninsula, the Korean Peninsula, and Florida. The Tropic of Cancer is at approximately 23.5°N latitude. It is the northernmost latitude where the Sun can appear directly overhead, which occurs during the June solstice. Mauna Loa in Hawaii is the largest active volcano on Earth by volume and area, rising about 4,169 m above sea level. Measured from its base on the ocean floor, it stands over 9,000 m tall.

Question 44 Countries And Continents

Which is the only continent with no permanent human population?

Antarctica has no permanent residents. It hosts rotating research station personnel, typically 1,000–5,000 people depending on the season. The Dead Sea is a hypersaline lake bordered by Jordan, Israel, and the West Bank. Its surface is about 430 meters below sea level, making it the lowest land-based elevation on Earth. Monaco is the most densely populated country, with about 26,000 people per km². The small city-state on the French Riviera covers only about 2.02 km². Africa has the most countries with 54 recognized sovereign states. It is also the second-largest and second-most-populous continent.

Question 45 Countries And Continents

What is the Sahara Desert?

The Dry Valleys of Antarctica are considered the driest place, having received virtually no precipitation for about 2 million years. Among inhabited places, the Atacama Desert in Chile is the driest. The Sahara is the world's largest hot desert, covering about 9.2 million km² across North Africa. It spans 11 countries and is roughly the size of the United States. Canada has the longest coastline at about 202,080 km, including its mainland and island coasts. This is largely due to its extensive Arctic archipelago. Algeria is the largest country in Africa at about 2.38 million km², located in North Africa along the Mediterranean coast.

Question 46 Countries And Continents

What is the largest country in Africa by area?

Denali (formerly Mount McKinley) in Alaska stands at 6,190 meters. It has the largest base-to-peak rise of any mountain on Earth's surface. The Panama Canal is a 77 km artificial waterway in Panama connecting the Atlantic and Pacific Oceans. Completed in 1914, it revolutionized global shipping by eliminating the need to sail around South America. Algeria is the largest country in Africa at about 2.38 million km², located in North Africa along the Mediterranean coast. Aconcagua in Argentina stands at 6,961 meters. It is the highest peak in both the Western and Southern Hemispheres.

Question 47 Countries And Continents

How many time zones are there in the world?

The Danube River flows through or borders four capital cities: Vienna, Bratislava, Budapest, and Belgrade. It is the second-longest river in Europe at about 2,850 km. There are 24 standard time zones, each roughly 15° of longitude apart. However, some countries and territories use offset time zones (e.g., India at UTC+5:30), resulting in more than 24 in practice. The Great Rift Valley is a continuous geographic trench running from Lebanon's Beqaa Valley to Mozambique in southeastern Africa. It is caused by tectonic plate divergence and contains many lakes and volcanoes. Lake Superior in North America is the largest freshwater lake by surface area at about 82,100 km². It is one of the five Great Lakes.

Question 48 Countries And Continents

What is the Continental Divide?

An isthmus is a narrow strip of land connecting two larger landmasses. The Isthmus of Panama connects North and South America, and the Isthmus of Suez connects Africa and Asia. A continental divide is a ridge of high ground that separates river systems flowing to different sides of a continent. In North America, the Great Divide runs along the Rocky Mountains. Mauna Loa in Hawaii is the largest active volcano on Earth by volume and area, rising about 4,169 m above sea level. Measured from its base on the ocean floor, it stands over 9,000 m tall. The Philippine Sea is the largest marginal sea at about 5.7 million km², located in the western Pacific Ocean east of the Philippines.

Question 49 Countries And Continents

What is the largest sea in the world?

The Alps are the highest and most extensive mountain range in Europe, stretching about 1,200 km across eight countries. Mont Blanc (4,809 m) is the highest peak. Lake Titicaca, on the border of Peru and Bolivia, sits at about 3,812 meters above sea level. It is the largest lake in South America by volume. The Arctic Circle is at approximately 66.5°N latitude. North of this line, there is at least one day per year of continuous daylight (midnight sun) and one day of continuous darkness (polar night). The Philippine Sea is the largest marginal sea at about 5.7 million km², located in the western Pacific Ocean east of the Philippines.

Question 50 Countries And Continents

What are the Great Lakes of North America?

Longitude measures how far east or west a point is from the Prime Meridian, expressed in degrees from 0° to 180°. Lines of longitude run north-south and are called meridians. The Tropic of Capricorn is at approximately 23.5°S latitude. It is the southernmost latitude where the Sun can appear directly overhead, during the December solstice. The Great Lakes are five large freshwater lakes: Superior, Michigan, Huron, Erie, and Ontario (remembered by the acronym HOMES). Together they hold about 21% of the world's surface fresh water. The Mediterranean Sea is a nearly landlocked sea connected to the Atlantic Ocean by the Strait of Gibraltar. It is bordered by Europe, Africa, and Asia, covering about 2.5 million km².