Islands clustered together (Aegean Archipelago, Europe).
Imaginary line about 66 degrees north of the equator. North of this line the climate is very cold and harsh.
Coral reef enclosing a lagoon (Gilber Islands, Oceania).
1. Area of land that is lower than surrounding land (Great Basin, North America). 2. Area drained by river system (Amazon Basin, South America).
Area of an ocean, sea, lake, etc., that extends into the land. Bays are usually smaller than gulfs (San Francisco Bay, North America).
Deep, narrow, steep-sided valley, often with a river on its floor (Grand Canyon, North America).
Piece of land extending beyond the rest of the shoreline into the ocean (Cape of Good Hope, Africa).
All the weather that occurs in an area over a lond period of time. It is usually described as a combination of temperature and precipitation.
Huge land mass. There are seven continents. Five-Africa, Asia, Europe, and North and South America-are divided into countries. One, Australia is a continent and a country. The last, Antarctica, does not have any permanent inhabitants.
Any independent nation with a name and boundary. Except for Australia, countries are smaller than continents. Russia, Canada, China, and the United States are the world's largest countries in area. China and India are the largest countries in population.
Triangular-shaped area of small islands of sediment that divide a river into smaller parts at its mouth (Nile River Delta, Africa).
Dry area which receives such a small amount of precipitation that little or no plant or animal life can survive there permanently. Deserts may be very hot (Sahara, Africa) or very cold (Antarctica).
Imaginary line that circles Earth halfway between the poles.
Study of the features of the earth and of the places where plants and animals live and how they affect and are affected by their environments.
Huge mass of slowly moving ice (Malaspina Glacier, North America).
Large part of an ocean that extends into the land. A gulf is usually larger than a bay (Persian Gulf, Asia).
One half of the earth. When divided at the equator, the two halves are the Northern and Southern Hemispheres. When divided from pole to pole, the two halves are the Eastern Hemisphere (Africa, Asia, Australia, Europe) and the Western Hemisphere (North and South America).
Land that rises to a summit no more than 1,000 feet (305 m) above the surrounding area.
Land completely surrounded by water (Madagascar, Africa).
Narrow neck of land connecting two larger areas of land (Isthmus of Panama connecting North and South America).
A body of water surrounded by land. Lakes are usually filled with fresh water (Lake Superior, North America).
Land that rises higher than hills above surrounding area (Himalayas, Asia).
The lower end of a river where it flows into another body of water (Huang He at Bo Hai, Asia).
Huge area of salt water. The five oceans (Arctic, Atlantic, Indian, Pacific, Southern) cover almost three-fourths of the earth's surface.
Area of land almost surrounded by water (Malay Peninsula, Asia).
Large area of flat or gently rolling, treeless land (Great Plains, North America).
Large area of level land that is higher than surrounding land. Plateaus are often cut by canyons, and a mountain system is usuallylocated on at least one edge (Plateau of Tibet, Asia).
Northern and southernmost points on the earth. The North Pole is on an icecap of the Arctic Ocean and the South Pole is on Antarctica.
Flat or rolling land with few trees but covered with grasses.
Rain, hail, sleet, snow, and other types of moisture that fall to earth.
Large amount of flowing fresh water (Nile River, Africa).
Dry area of flat or rolling land that supports grasses but few trees. Savannas are located in tropical and subtropical areas.
Part of an ocean that has been identified by geographers as a distinct body of water with a name (Mediterranean Sea, Europe/Africa)
Large area that experiences very hot and very cold temperatures and little precipitation but supports hardy grasses and other plants.
narrow bodu of water that connects two larger bodies of water (Strait of Gibraltar connecting the Atlantic Ocean and Mediterranean Sea).
Highest point on a hill or mountain.
Area of land that is very wet year round and in which trees and shrubs grow (Everglades, North America).
Stream or river that flows into a larger stream or river. A river and its tributaries form a river system (Madeira River, South America).
Treeless plain close to or above the Arctic Circle. Some vegetation grows in the topsoil when it thaws in summer, but the subsoil is frozen.
Long, low-lying area usually located between ranges of hills or mountains (Sacramento Valley, North America).
Cone-shaped mountain formed by lava and or other materials that have erupted from the interior of the earth (Mount Fuji, Asia).