1. Alaska
   Texas
2. Rhode Island
   Wyoming

Alaska is the most northwestern of all US states and shares a maritime border with Russia. It is the largest and most sparsely populated of all US states.

1. Ireland
   Nepal
2. Italy
   Canada

The Mediterranean Sea separates Southern Europe from Northern Europe. Italy sticks out into the Mediterranean Sea.

1. The North Pole
   Moscow, Russia
2. Denali
   The Caspian Sea

The North Pole is located in the Arctic Ocean and is permanently covered with shifting sea ice. It sits at 90 degrees north and it is where all lines of longitude converge.

1. Europe
   Asia
2. Africa
   Antarctica

The Sahara desert takes up most of North Africa and is the largest hot desert on earth. It is roughly the size of the United States.

1. Arctic
   Pacific
2. Atlantic
   All of the above

North America is bordered by the Arctic Ocean to the north. The Atlantic Ocean touches its east coast and the Pacific Ocean its west coast.

1. More
2. Less

The surface of the Northern Hemisphere is roughly 60% water, while the Southern Hemisphere is roughly 81% water. Over 2/3 of the earth's land is in the Northern Hemisphere.

1. America
   Norway
2. Russia
   All of the Above

The Arctic is located at the earth's northernmost pole. Known for year-round ice cover and a treeless tundra, this area is changing due to global warming.

1. Tropical
   Northern Temperate
2. Arctic Circle
   Equator

The Arctic region in the Northern Hemisphere is north of the Arctic Circle. It characterized by long, dark winters, which are sunless for periods of time, ice caps, and periods of time during the summer where the sun never sets.

1. Europe
   North America
2. Continental Asia
   Australia

Australia is almost entirely in the Southern Hemisphere, with the exception of a few small islands. Most of the world's continents, countries and people are above the equator.

1. The Alps
   The Rocky Mountains
2. The Himalayas
   The Carpathian Mountains

The Himalayas contain many of the tallest mountains in the world, with over 50 mountains higher than 23,600 feet. The range spreads across India, Nepal, Bhutan, Pakistan and China.

1. North America
   Continental Europe
2. Africa
   Continental Asia

Africa is in both the Northern and Southern Hemispheres. About 2/3 of the continent is in the north, however.

1. Chain of mountain ranges
   River system
2. Massive glacier
   Underground lake

The American Cordillera is a nearly continuous sequence of mountain ranges that run from North America to Antarctica. They begin in Alaska with the Alaska Range and Brooks Range and can be traced throughout the Americas to their end on the mountains of the Antarctic Peninsula.

1. India
   Canada
2. China
   France

There are roughly 100 countries on earth with mountains taller than 23,622 feet high. About half of them can be found in China.

1. New Zealand
   Australia
2. Sweden
   South Africa

Sweden is a continental European country. All continental European countries are in the Northern Hemisphere.

1. Denali
   Mount Everest
2. Cho Oyu
   Broad Peak

Mount Everest is the highest mountain on earth, at 29,029 feet tall. It's located between Tibet and Nepal in a subrange of the Himalayas.

1. The shore of the Dead Sea
   Death Valley
2. Yellowstone National Park
   The Gobi Desert

The earth's lowest point on dry land is the shore of the Dead Sea, at over 1,300 feet below sea level. The shore of the dead sea is shared by Jordan, Palestine, and Israel.

1. Greenland
   Iceland
2. Jamaica
   Paraguay

While Greenland is geographically a part of North America, it is politically and culturally associated with Scandinavia. Greenland is the world's largest island and the least populated country on earth.

1. Yes
2. No

The Khumbu Glacier, which can be found on the southwest slopes of Mount Everest, in Nepal, is the highest glacier on earth. It begins at an elevation of more than 24,000 feet.

1. Rough waters
   Deep blue color
2. Huge size
   Extreme depth

Being nearly landlocked between Africa and Europe affects the Mediterranean Sea. It is a relatively calm sea known for its deep blue color.

1. Istanbul
   New York City
2. Reykjavik
   Los Angeles

Istanbul, Turkey straddles the Bosphorus Strait, which separates Europe from Asia. It is one of the world's most populous cities and the biggest European city.

1. 10%
   90%
2. 55%
   100%

The Northern Hemisphere is home to roughly 6.5 billion of earth's roughly 7 billion people. This about 90% of earth's population.

1. Yes
2. No

Europe is divided into about 50 sovereign states, of which the Russian Federation is the largest by land and population. It takes up about 40% of the continent.

1. North America
   South America
2. Europe
   Africa

Europe has more coastline than any other continent in the world. Its coasts span along the Arctic and Atlantic oceans and the Black, Caspian, and Mediterranean seas.

1. Yes
2. No

North America is the third largest continent by area. Asia is the largest, followed by Africa.

1. Helter Bridge
   The Isthmus of Panama
2. Mount Everest
   The Bosphorus Strait

North America's only land connection to South America is the Isthmus of Panama. This strip of land lies between the Caribbean Sea and the Pacific Ocean.

1. Northern
   Southern
2. Western
   All of the above

The Pacific Ring of Fire runs along all landmasses which touch the Pacific Ocean, including New Zealand, Maritime Southeast Asia and the Americas. 75% of the world's volcanoes and 90% of the world's earthquakes occur in this area.

1. Appalachian Mountains
   Himalayas
2. Andes
   Atlas Mountains

The Appalachian Mountains run along the US East Coast from Pennsylvania to Georgia. The highest peak is the 6,684 foot-tall Mount Mitchell.

1. Asia
   Europe
2. North America
   Australia

There are over 100 mountains on earth with elevations of 23,622 feet or higher. Most of these can be found throughout Northern India, Tibet and Central Asia.

1. Amazon
   Nile
2. Mississippi
   Brahmaputra

The Nile River in Northern Africa is, according to some sources, the longest river on earth. At over 4,000 miles long, the Nile's basin covers 11 African countries.

1. Lake Victoria
   Luke Superior
2. Lake Michigan
   Loch Ness

Lake Victoria straddles the equator in Africa and touches Uganda, Kenya, and Tanzania. It is the largest tropical lake on earth.

1. River
   Waterfall
2. Lake
   Ocean

This Eurasian lake is the largest enclosed body of water on planet Earth. Its shores touch Kazakhstan, Russia, Azerbaijan, Iran and Turkmenistan.

1. Asia
   America
2. England
   Russia

The world's highest islands are in Tibet. They sit in Orba Co lake at an elevation of over 17,000 feet.

1. Europe
   Asia
2. Africa
   North America

The Iberian Peninsula is in Southwestern Europe. It is shared by Portugal, Andorra, Spain and Gibraltar.

1. Western Asia
   Central Asia
2. Maritime Southeast Asia
   The Middle East

Maritime Southeast Asia straddles the equator and lays between Mainland Asia and Australia. It contains Malaysia, Brunei, the Phillippines, Singapore, Indonesia and Timor Leste.

1. Ice-cap
   Warm-summer humid continental
2. Oceanic
   All of the Above

There are diverse climates and geographical features across the United States. There are over two dozen different climate in the vast country.