New Zealand
predominately mountainous with some large coastal plains
Nicaragua
extensive Atlantic coastal plains rising to central
interior mountains; narrow Pacific coastal plain interrupted by
volcanoes
Niger
predominately desert plains and sand dunes; flat to rolling
plains in south; hills in north
Nigeria
southern lowlands merge into central hills and plateaus;
mountains in southeast, plains in north
Niue
steep limestone cliffs along coast, central plateau
Norfolk Island
volcanic formation with mostly rolling plains
Northern Mariana Islands
southern islands are limestone with level
terraces and fringing coral reefs; northern islands are volcanic
Norway
glaciated; mostly high plateaus and rugged mountains broken
by fertile valleys; small, scattered plains; coastline deeply
indented by fjords; arctic tundra in north
Oman
central desert plain, rugged mountains in north and south
Pacific Ocean
surface currents in the northern Pacific are dominated
by a clockwise, warm-water gyre (broad circular system of currents)
and in the southern Pacific by a counterclockwise, cool-water gyre;
in the northern Pacific, sea ice forms in the Bering Sea and Sea of
Okhotsk in winter; in the southern Pacific, sea ice from Antarctica
reaches its northernmost extent in October; the ocean floor in the
eastern Pacific is dominated by the East Pacific Rise, while the
western Pacific is dissected by deep trenches, including the Mariana
Trench, which is the world's deepest