Description: A ionosfera é uma parte da atmosfera (acima de cerca de 80 quilômetros). Ela contém uma alta concentração de íons devido à parte de alta energia da radiação que a Terra recebe do Sol, que quebra as moléculas em átomos e, em seguida, os átomos em íons e elétrons. A presença de elétrons livres faz com que essa região da atmosfera seja uma boma condutora de eletricidade. Dessa forma, a ionosfera é capaz de refletir ondas de rádio em determinados comprimentos de onda.

Related Terms:

• Atmosfera
• Elétron

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".

If you notice a factual or translation error in this glossary term or definition then please get in touch.