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- Aare, Aar, Aare River
a river in north central Switzerland that runs northeast into the Rhine - Abukir, Abukir Bay
a bay on the Mediterranean Sea in northern Egypt - Acheron, River Acheron
(Greek mythology) a river in Hades across which the souls of the dead were carried by Charon - Aconcagua
the highest mountain in the western hemisphere - Adams, Mount Adams
a mountain peak in southwestern Washington in the Cascade Range (12,307 feet high) - Adam's Peak, Samanala
a mountain peak in south central Sri Lanka (7,360 feet high) - Adige, River Adige
a river in northern Italy that flows southeast into the Adriatic Sea - Adirondacks, Adirondack Mountains
a mountain range in northeastern New York State - Admiralty Range
mountains in Antarctica to the north of Victoria Land - Adriatic, Adriatic Sea
an arm of the Mediterranean between Slovenia and Croatia and Montenegro and Albania on the east and Italy on the west - Aegean, Aegean Sea
an arm of the Mediterranean between Greece and Turkey - Aegospotami, Aegospotamos
a creek emptying into the Hellespont in present-day Turkey - Africa
the second largest continent - Aire, River Aire, Aire River
a river in northern England that flows southeast through West Yorkshire - Alabama, Alabama River
a river in Alabama formed by the confluence of the Coosa and Tallapoosa Rivers near Montgomery - Alaska Peninsula
a peninsula of southwestern Alaska (a continuation of the Aleutian Islands) - Alaska Range
a mountain range in south central Alaska - Aldebaran
the brightest star in Taurus - Algol
the second brightest star in Perseus - Alleghenies, Allegheny Mountains
the western part of the Appalachian Mountains - Allegheny, Allegheny River
a river that rises in Pennsylvania and flows north into New York and then back south through Pennsylvania again to join the Monongahela River at Pittsburgh which is the beginning of the Ohio River - Alpha Centauri, Rigil Kent, Rigil
brightest star in Centaurus - Alpha Crucis
the brightest star in the Southern Cross - Alps, the Alps
a large mountain system in south-central Europe - Altai Mountains, Altay Mountains
a mountain range in central Asia that extends a thousand miles from Kazakhstan eastward into western Mongolia and northern China - Altair
double star 15.7 light years from Earth - Amazon, Amazon River
a major South American river - America
North America and South America and Central America - American Falls
a part of Niagara Falls in western New York (north of Buffalo) - Amur, Amur River, Heilong Jiang, Heilong
an Asian river between China and Russia - Ancohuma
a mountain peak in the Andes in Bolivia (20,960 feet high) - Andaman Sea
part of the Bay of Bengal to the west of the Malay Peninsula - Andes
a mountain range in South America running 5000 miles along the Pacific coast - Andromeda
a constellation in the northern hemisphere between Cassiopeia and Pegasus - Angara, Angara River, Tunguska, Upper Tunguska
a river in southeastern Siberia that flows northwest from Lake Baikal to become a tributary of the Yenisei River - Angel, Angel Falls
the highest waterfall - Annapurna, Anapurna
a mountain in the Himalayas in Nepal (26,500 feet high) - Antarctica, Antarctic continent
an extremely cold continent at the south pole almost entirely below the Antarctic Circle - Antarctic Ocean
the southern waters surrounding Antarctica - Antarctic Peninsula, Palmer Peninsula
a large peninsula of Antarctica that extends some 1200 miles north toward South America - Antares
the brightest star in Scorpius - Antlia
a faint constellation in the southern hemisphere near Hydra and Vela - Apalachicola, Apalachicola River
a river in northwestern Florida formed by the confluence of the Chattahoochee River and the Flint River at the Florida border - Apennines
a mountain range extending the length of the Italian peninsula - Apollo asteroid
an asteroid whose orbit crosses the Earth's orbit - Appalachians, Appalachian Mountains
a mountain range in the eastern United States extending from Quebec to the Gulf of Mexico - Apus
a constellation in the polar region of the southern hemisphere near Octans - Aquarius
a zodiacal constellation in the southern hemisphere - Aquila
a constellation in the Milky Way near Cygnus - Ara
a constellation in the southern hemisphere near Telescopium and Norma - Arabian Sea
a northwestern arm of the Indian Ocean between India and Arabia - Arafura Sea
a part of the western Pacific Ocean to the north of Australia and to the south of New Guinea and the eastern islands of Indonesia - Araguaia, Araguaia River, Araguaya, Araguaya River
a river in central Brazil that flows generally northward (with many falls) to join the Tocantins River - Ararat, Mount Ararat, Mt. Ararat
the mountain peak that Noah's ark landed on as the waters of the great flood receded - Aras, Araxes
a river that rises in northeastern Turkey (near the source of the Euphrates) and flows generally eastward through Armenia to the Caspian Sea - Arauca
a river that rises in northern Colombia and flows generally eastward to the Orinoco in central Venezuela - Arctic Ocean
ice covered waters surrounding the North Pole - Arcturus
the 4th brightest star and the brightest star in the constellation Bootes - Argo
formerly a large constellation in the southern hemisphere between Canis Major and the Southern Cross - Argun, Argun River, Ergun He
a river in eastern Asia that arises in China and flows northeast along the border between China and Russia to become a tributary of the Amur River - Aries
a small zodiacal constellation in the northern hemisphere - Aristarchus
a bright crater on the Moon - Arkansas, Arkansas River
a river that rises in the Rocky Mountains in Colorado and flows southeast through Kansas and Oklahoma and through Arkansas to become a tributary of the Mississippi River - Arno, Arno River, River Arno
a river in central Italy rising in the Apennines and flowing through Florence and Pisa to the Ligurian Sea - Asia
the largest continent with 60% of the earth's population - Atacama Trench
a depression in the floor of the Pacific Ocean off the coast of Chile - Atlantic, Atlantic Ocean
the 2nd largest ocean - Atlantic Coast
a coast of the Atlantic Ocean - Atlas Mountains
a mountain range in northern Africa between the Mediterranean and the Sahara Desert - Auriga, Charioteer
a conspicuous constellation in the northern hemisphere - Australia
the smallest continent - Australian Alps
a range of mountains in Australia that forms the southern end of the Great Dividing Range - Avon, River Avon, Upper Avon, Upper Avon River
a river in central England that flows through Stratford-on-Avon and empties into the Severn - Avon, River Avon
a river in southwestern England rising in Gloucestershire and flowing through Bristol to empty into the estuary of the Severn - Baffin Bay
a body of water between Greenland and northeastern Canada - Balaton, Lake Balaton, Plattensee
a large shallow lake in western Hungary - Balkans, Balkan Mountains, Balkan Mountain Range
the major mountain range of Bulgaria and the Balkan Peninsula - Baltic, Baltic Sea
a sea in northern Europe - Barents Sea
the part of the Arctic Ocean to the north of Norway and Russia - Bay of Bengal
an arm of the Indian Ocean to the east of India - Bay of Biscay
an arm of the Atlantic Ocean in western Europe - Bay of Fundy
a bay of the North Atlantic between New Brunswick and Nova Scotia - Bay of Naples
an arm of the Tyrrhenian Sea at Naples - Beaufort Sea
part of the Arctic Ocean to the northeast of Alaska - Bering Sea
part of the North Pacific between Alaska and Siberia - Bering Strait
a strait connecting the Bering Sea to the Arctic Ocean - Berkshires, Berkshire Hills
a low mountain range in western Massachusetts - Beta Centauri
the second brightest star in Centaurus - Beta Crucis
the second brightest star in the Southern Cross - Betelgeuse, Alpha Orionis
the second brightest star in Orion - Big Dipper, Dipper, Plough, Charles's Wain, Wain, Wagon
a group of seven bright stars in the constellation Ursa Major - Bighorn, Bighorn River
a river that flows from central Wyoming to the Yellowstone River in southern Montana - Bight of Benin
a broad indentation of the Gulf of Guinea in western Africa - Big Sioux River
a river that rises in northeastern South Dakota and flows southward to join the Missouri River at Sioux City, Iowa - Biscayne Bay
a narrow bay formed by an inlet from the Atlantic Ocean in southeastern Florida - Bismarck Sea
an arm of the South Pacific to the southwest of the Bismarck Archipelago - Black Forest, Schwarzwald
a hilly forest region in southwestern Germany - Black Hills
mountains in southwestern South Dakota and northeastern Wyoming - Black Sea, Euxine Sea
a sea between Europe and Asia - Blue Nile
a headstream of the Nile - Blue Ridge Mountains, Blue Ridge
a range of the Appalachians extending from southern Pennsylvania to northern Georgia - Bo Hai, Po Hai
an inlet of the Yellow Sea, on the coast of Eastern China - Bonete
a mountain in the Andes in Argentina (22,546 feet high) - Bootes
a constellation in the northern hemisphere near Ursa Major - Bosporus
a strait connecting the Mediterranean and the Black Sea - Bougainville Trench
a depression in the floor of the Pacific Ocean between New Guinea and the Solomon Islands - Brahmaputra, Brahmaputra River
an Asian river - Brazos, Brazos River
a river that rises in Mexico and flows across Texas into the Gulf of Mexico - Brenner Pass
an Alpine mountain pass connecting Innsbruck in Austria with Bolzano in Italy that has long been a route for trade and for invasions - Bristol Channel
an inlet of the Atlantic Ocean between southern Wales and southwestern England - Buzzards Bay
an inlet of the Atlantic Ocean in southeastern Massachusetts - Cachi
a mountain in the Andes in Argentina (22,047 feet high) - Caelum
a constellation in the southern hemisphere near Columba and Eridanus - Callisto
the second largest of Jupiter's satellites - Caloosahatchee, Caloosahatchee River
a river in southern Florida that flows westerly to the Gulf of Mexico - Cam, River Cam, Cam River
a river in east central England that flows past Cambridge to join the Ouse River - Cambrian Mountains
a rugged plateau that runs north to south through central Wales - Canadian, Canadian River
a river rising in northeastern New Mexico and flowing eastward across the Texas panhandle to become a tributary of the Arkansas River in Oklahoma - Canadian Falls, Horseshoe Falls
a part of Niagara Falls in Ontario - Canandaigua Lake, Lake Canandaigua
a glacial lake in central New York - Cancer
a small zodiacal constellation in the northern hemisphere - Canis Major, Great Dog
a constellation to the southeast of Orion - Canis Minor, Little Dog
a constellation to the east of Orion - Canopus
supergiant star 650 light years from Earth - Cantabrian Mountains
a range of mountains in northern Spain along the coast of the Bay of Biscay - Cape Canaveral, Cape Kennedy
a sandy promontory (formerly Cape Kennedy) extending into the Atlantic Ocean from a barrier island off the eastern coast of Florida - Cape Cod Bay
the southern part of Massachusetts Bay - Cape Fear River
a river in North Carolina that flows southeast to the Atlantic Ocean at Cape Fear - Capella
the brightest star in Auriga - Cape Sable
a promontory on the far southern part of Nova Scotia - Cape Sable
a cape at the southwest tip of Florida - Cape Trafalgar
a small cape in southwestern Spain - Cape York
the northern tip of Cape York Peninsula at the Torres Strait - Cape York Peninsula
a peninsula in Queensland in northeastern Australia between the Gulf of Carpentaria and the Coral Sea - Capricorn, Capricornus
a faint zodiacal constellation in the southern hemisphere - Caribbean, Caribbean Sea
an arm of the Atlantic Ocean between North and South America - Carina
a keel-shaped constellation in the southern hemisphere - Carlsbad Caverns
a group of caverns in southeastern New Mexico noted for their stalactites and stalagmites - Carpathians, Carpathian Mountains
a mountain range in central Europe that extends from Slovakia and southern Poland southeastward through western Ukraine to northeastern Romania - Cascades, Cascade Range, Cascade Mountains
a mountain range in the northwestern United States extending through Washington and Oregon and northern California - Caspian, Caspian Sea
a large saltwater lake between Iran and Russia fed by the Volga River - Cassiopeia
a W-shaped constellation in the northern hemisphere near Polaris - Castor, Alpha Geminorum
a multiple star with 6 components - Cataract Canyon
a tributary of the Grand Canyon - Catskills, Catskill Mountains
a range of the Appalachians to the west of the Hudson in southeastern New York - Caucasus, Caucasus Mountains
the mountain range in Caucasia between the Black Sea and the Caspian Sea that forms part of the traditional border between Europe and Asia - Cayuga Lake, Lake Cayuga
a glacial lake in central New York - Centaurus, Centaur
a conspicuous constellation in the southern hemisphere near the Southern Cross - Cepheus
a faint constellation in the northern hemisphere near Cassiopeia and the pole star - Ceres
the largest asteroid and the first discovered - Cetus
a large constellation on the equator near Pisces and Aquarius - Chamaeleon, Chameleon
a faint constellation in the polar region of the southern hemisphere near Apus and Mensa - Changtzu
a mountain in the central Himalayas on the border of Tibet and Nepal (24,780 feet high) - Chao Phraya
a river in Thailand formed by the confluence of the Nan and Ping Rivers - Charles, Charles River
a river in eastern Massachusetts that empties into Boston Harbor and that separates Cambridge from Boston - Chattahoochee, Chattahoochee River
a river rising in northern Georgia and flowing southwest and south to join the Flint River at the Florida border where they form the Apalachicola River - Baikal, Lake Baikal, Baykal, Lake Baykal
the largest freshwater lake in Asia or Europe and the deepest lake in the world - Lake Chelan
a narrow very deep lake in central Washington in the Cascade Range - Coeur d'Alene Lake
a lake in northern Idaho - Lake Tahoe
a lake on the border between Nevada and California to the west of Carson City - Chesapeake Bay
a large inlet of the North Atlantic between Virginia and Maryland - Chimborazo
a mountain peak in the Andes in Ecuador (20,560 feet high) - Chukchi Peninsula
peninsula of northeastern Siberia across the Bering Strait from northwestern Alaska - Chukchi Sea
part of the Arctic Ocean just to the north of the Bering Strait - Cimarron, Cimarron River
a river that rises in northeastern New Mexico and flows eastward into Oklahoma where it becomes a tributary of the Arkansas River - Circinus
a small faint constellation in the southern hemisphere near Musca and Triangulum Australe - Clinch River
a river that rises in southwestern Virginia and flows generally southwestward across eastern Tennessee to the Tennessee River - Clyde
a river in western Scotland that flows from the southern uplands into the Firth of Clyde - Coast Range, Coast Mountains
a string of mountain ranges along the Pacific coast of North America from southeastern Alaska to Lower California - Cocytus, River Cocytus
(Greek mythology) a river in Hades that was said to be a tributary of the Acheron - Colorado, Colorado River
an important river in the southwestern United States - Colorado, Colorado River
a river in Texas - Colorado Plateau
a large plateau to the south and west of the Rocky Mountains - Columba, Dove
a constellation in the southern hemisphere near Puppis and Caelum - Columbia, Columbia River
a North American river - Coma Berenices
a constellation in the northern hemisphere between Ursa Major and Bootes - Communism Peak, Mount Communism, Stalin Peak, Mount Garmo
the highest mountain peak in the Pamir Mountains - Congo, Congo River, Zaire River
a major African river (one of the world's longest) - Connecticut, Connecticut River
a river in the northeastern United States - Constance, Lake Constance, Bodensee
a lake in southeastern Germany on the northern side of the Swiss Alps - Cook Strait
a narrow strait separating the North Island and South Island in New Zealand - Coosa, Coosa River
river that rises in northwestern Georgia and flows southwest through eastern Alabama to join the Tallapoosa River near Montgomery and form the Alabama River - Copernicus
a conspicuous crater on the Moon - Coral Sea
an arm of the South Pacific to the northeast of Australia - Corona Borealis
a small constellation in the northern hemisphere between Bootes and Hercules - Coropuna
a mountain peak in the Andes in Peru (21,083 feet high) - Corvus, Crow
a small quadrilateral constellation in the southern hemisphere near Virgo - Crab Nebula
a remnant of a supernova detected first in 1054 AD - Crater
a faint constellation in the southern hemisphere near Hydra and Corvus - Cross-Florida Waterway, Okeechobee Waterway
a waterway used by small boats to travel between the Atlantic Ocean and the Gulf of Mexico through Lake Okeechobee and the Caloosahatchee Canal and the Caloosahatchee River - Cumberland, Cumberland River
a river that rises in southeastern Kentucky and flows westward through northern Tennessee to become a tributary of the Ohio River in southwestern Kentucky - Cumberland Gap
a pass through the Cumberland Mountains between Virginia and Kentucky that early settlers used in order to move west - Cumberland Mountains, Cumberland Plateau
the southwestern part of the Appalachians - Cuquenan, Cuquenan Falls, Kukenaam, Kukenaam Falls
a famous waterfall in Venezuela - Cygnus
a constellation in the northern hemisphere between Pegasus and Draco in the Milky Way - Danube, Danube River, Danau
the 2nd longest European river (after the Volga) - Darling, Darling River
an Australian river - Dead Sea
a saltwater lake on the border between Israel and Jordan - Deimos
the outer of two small satellites of Mars - Delaware, Delaware River
a river that rises in the Catskills in southeastern New York and flows southward along the border of Pennsylvania with New York and New Jersey to northern Delaware where it empties into Delaware Bay