ixfold increase in
area; the Antarctic Circumpolar Current (21,000 km in length) moves
perpetually eastward; it is the world's largest ocean current,
transporting 130 million cubic meters of water per second - 100
times the flow of all the world's rivers

Spain
large, flat to dissected plateau surrounded by rugged hills;
Pyrenees in north

Spratly Islands
flat

Sri Lanka
mostly low, flat to rolling plain; mountains in
south-central interior

Sudan
generally flat, featureless plain; mountains in far south,
northeast and west; desert dominates the north

Suriname
mostly rolling hills; narrow coastal plain with swamps

Svalbard
wild, rugged mountains; much of high land ice covered; west
coast clear of ice about one-half of the year; fjords along west and
north coasts

Swaziland
mostly mountains and hills; some moderately sloping plains

Sweden
mostly flat or gently rolling lowlands; mountains in west

Switzerland
mostly mountains (Alps in south, Jura in northwest) with
a central plateau of rolling hills, plains, and large lakes

Syria
primarily semiarid and desert plateau; narrow coastal plain;
mountains in west

Taiwan
eastern two-thirds mostly rugged mountains; flat to gently
rolling plains in west

Tajikistan
Pamir and Alay Mountains dominate landscape; western
Fergana Valley in north, Kofarnihon and Vakhsh Valleys in southwest

Tanzania
plains along coast; central plateau; highlands in north,
south

Thailand
central plain; Khorat Plateau in the east; mountains
elsewhere

Togo
gently rolling savanna in north; central hills; southern
plateau; low coastal plain with extensive lagoons and marshes

Tokelau
low-lying coral atolls enclosing large lagoons

Tonga
most islands have limestone base formed from uplifted coral
formation; others have limestone overlying volcanic base

Trinidad and Tobago
mostly plains with some hills and low mountains

Tromelin Island
low, flat, and sandy; likely volcanic

Tunisia
mountains in north; hot, dry central plain; semiarid south
merges into the Sahara

Turkey
high central plateau (Anatolia); narrow coastal plain;
several mountain ranges

Turkmenistan
flat-to-rolling sandy desert with dunes rising to
mountains in the south; low mountains along border with Iran;
borders Caspian Sea in west

Turks and Caicos Islands
low, flat limestone; extensive marshes