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What term refers to flat bottomed depression, also known as a "flat" or a "dry lake", found in interior desert basins?

Playa. Interior desert basins and adjacent to coasts is where you will find a PLAYA. They are found in arid or semi arid areas which were periodically covered in water that slowly filtrated in to the water system or like most occasion evaporates into the atmosphere, causing salt deposition and that of sand and mud along the bottom of the depression.The word derives from the Spanish for shore or beach and are very flat landforms.

Which lake would be considered the headwater of the single drainage system formed by the Great Lakes?

Superior. The drainage of the lakes roughly empty from west to east in to the Atlantic. Except for Michigan and Huron lakes, their altitudes drop with each lake, usually causing a progressively increasing rate of flow. Superior , bordered by Ontario, the Upper peninsula of Michigan, Wisconsin, and Minnesota, is the most Northern and westernmost lake and can be considered the headwater of the system.

What term is given to a narrow strip of land connecting two large land areas otherwise separated by sea?

Isthmus. The two most famous Isthmuses are the Panama connection of North and South America and the Suez connection of Africa and Asia. Isthmuses are of great importance for the migration of animal species and the growth of plant life.

What is a 'RIA'?

Deep, sunken river valley drowned by the sea. They can be found along rugged coast in line to a mountain chain, many rias were formed by the rise of the sea level after melting of the vast continental glaciers. Rias are commonly very irregular and may have several branching tributaries, they usually are the major drainage systems of the adjacent areas.

The source of the Arkansas River is in which mountain range?

Rocky. The Arkansas river rises in the Sawatch Range of the Rocky Mountains near Leadville in central Colorado and flows southeastward for 2,350km (1,460 miles) through Kansas, Oklahoma and Arkansas before it enters its tributary the Mississippi. It also enters Mississippi 64 km (40 miles) northeast of Arkansas City. It has a total fall of 3,475m (11,400ft) and its drainage basin covers 417,000 sq km(161,000 sq miles).

Along which country's coast is the world's second coral reef situated?

Belize. Second to the Great Barrier Reef of Australia and the largest of its kind in Northern and Western hemispheres. It extends for more than 290 km (180 miles) along the Caribbean coast of Belize. It maintains an offshore distance ranging from about 300m (1,000 ft) in the north to 40km (25 miles) in the south except at Rocky point which it meets wit ht the shoreline.

Where would you find the Qattara Depression?

Egypt. The Qattara depression can be found in the arid Libyan Desert (East Saharan) basin in Northwest Egypt. It covers around 18,100 sq km (7,000 sq miles) and contains salt lakes and marshes. It descends to 133m(435ft) below sea level. In the late 1970s oil deposits were discovered in the stouten part of the depression.

The sea of Azov is an extension of which sea?

Black Sea. Situated off the southern shores of Ukraine and Russia the Sea of Azov is an island sea. It forms a northern extension of the Black Sea to which it is linked on the south by the Kirch strait. The Sea of Azov is about 340km (210 miles) long and 135km (85 miles)wide and has an area of about 37,600sq km (14,500 sq miles).

What is the correct name given to a broad flat bottomed volcanic crater?

Caldera. A large bowl shaped depression reaching diameters of 1km (0.6 miles) distances and rimmed with infacing scarps. Calderas are often if not always, formed by the collapse of the top of a volcanic cone or group of cones because of removal of the support formerly furnished by an underlying body of molten rock (magma).

An easy one to finish with. What is a meander?

Bend in river or stream. An extreme U-bend in a stream, usually occurring in a series, meanders are most often formed in alluvial materials (stream deposited sediments) and thus freely adjust their shapes and shift downstream according to the slope of the alluvial valley.