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ENCYCLOPEDIC ENTRY

ENCYCLOPEDIC ENTRY

tropics

tropics

The tropics are regions of the Earth that lie roughly in the middle of the globe

Grades

5 - 12+

Subjects

Earth Science, Geography, Human Geography, Meteorology, Physical Geography

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Morgan Stanley

The tropics are regions of the Earth that lie roughly in the middle of the globe. The tropics between the latitude lines of the Tropic of Cancer and the Tropic of Capricorn. The tropics include the Equator and parts of North America, South America, Africa, Asia, and Australia. The tropics account for 36 percent of the Earth's landmass and are home to about a third of the world's people.

The tropics are warm all year, averaging 25 to 28 degrees Celsius (77 to 82 degrees Fahrenheit). This is because the tropics get more exposure to the sun. Because of all that sun, the tropics don't experience the kind of seasons the rest of the Earth does. The tropical seasons are broken up into just two: the wet season and the dry season.

The amount of rain can vary greatly from one area of the tropics to another. Some areas, like parts of the Amazon Basin in South America, get almost 3 meters (9 feet) of rain per year. Other areas in the tropics have a drier climate. The Sahara Desert in northern Africa only gets 2-10 centimeters (.793.9 inches) of rain per year.

The amount of rain a region gets in the tropics directly affects which plant and animal species live there. The baobab tree thrives in the arid tropics of Africa, for instance. The baobab stores water in its huge trunk. On the other extreme is the rainy island of Sri Lanka in the Indian Ocean. Sri Lanka gets enough precipitation to support 250 species of frogs.

Fast Fact

The Snows of Kilimanjaro
Elevation can affect the climate of a tropical region. Mount Kilimanjaro in Tanzania, with an elevation of 5,895 meters (19,340 feet), is a tropical mountain cold enough to support glaciers.

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Writers
Kim Rutledge, Kim Rutledge
Melissa McDaniel, Melissa McDaniel
Santani Teng, Santani Teng
Hilary Hall, Hilary Hall
Tara Ramroop, Tara Ramroop
Erin Sprout, Erin Sprout
Jeff Hunt, Jeff Hunt
Diane Boudreau, Diane Boudreau
Hilary Costa, Hilary Costa
Illustrators
Mary Crooks, National Geographic Society,
Tim Gunther, Tim Gunther
Editors
Jeannie Evers, Emdash Editing, Emdash Editing
Kara West, Kara West
Educator Reviewer
Nancy Wynne,
Producer
National Geographic Society, National Geographic Society
other
Last Updated

May 20, 2022

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