|Coble, Charles R; Murray, Elaine G; Rice, Dole R. Earth Science. Englewood Cliffs, NJ: Prentice-Hall, 1987: 102.||"Surface Area: Land area, about 148,300,000 sq km, or about 30% of total surface area; water area, about 361,800,000 sq km, or about 70% of total surface area."||148,300,000 km2|
|Science Desk Reference American Scientific. New York: Wiley, 1999: 180.||"Surface: Land surface 150,000,000 sq km, 57,500,000 sq mi."||150,000,000 km2|
|Weast, Robert C. CRC Handbook of Chemistry and Physics 61st edtion. Chemical Rubber Co., 1981: F-202.||"Data in regard to the earth: Land area, 148.847 × 106 km2, 57.470 × 106 sq mi. Ocean area, 361.254 × 106 km2, 139.480 × 106 sq mi."||148,847,000 km2|
|Weast, Robert C. CRC Handbook of Chemistry and Physics 48th edtion. Chemical Rubber Co., 1968: F-135.||"Data in regard to the earth (continued): Land area, 148.847 × 106 km2, 57.470 × 106 sq mi. Ocean area, 361.254 × 106 km2, 139.480 × 106 sq mi."||148,847,000 km2|
|earth fast facts. planetpals.||"surface area: 196,935,000 sq miles
percent of earths [sic] ocean 70% *
percent of earths [sic] land: 30"
The earth seen from space looks like a blue colored planet with constant moving swirls of clouds of earth's everchanging weather. The earth is mostly blue because its large surface area of oceans. The surface area of the bodies takes up 70 percent of earth's total surface area while the land only takes up 30 percent. This is very little land. The highest point on land is Mount Everest and the lowest is the Dead Sea. Land gains and loses heat much quicker than oceans. The land around the middle latitudes usually have hot summers and cold winters. The percentages of earth's land surface can be divided into different types: 20% covered by snow land, 20% mountains, 20% dry land, 30% good land that can be farmed, 10% land doesn't have topsoil. In my research all of the data found on the land surface area was around 1.5 × 108 km2.
Daniel Chen -- 2001