For reasons that remain obscure, the planet's thermosphere is at an anomalously high temperature of about 750 K. The planet is too far from the Sun for this heat to be generated by ultraviolet radiation. One candidate for a heating mechanism is atmospheric interaction with ions in the planet's magnetic field. Other candidates are gravity waves from the interior that dissipate in the atmosphere. The thermosphere contains traces of carbon dioxide and water, which may have been deposited from external sources such as meteorites and dust. COUNT 4
QSN1 What is Neptune's temperature in the thermosphere?  ANS1 750 K QSN2 What would interact with Neptune's magnetic field to make it warm? ANS2 atmospheric interaction with ions QSN3 Where would gravity waves in Neptune's interior dissipate?  ANS3 in the atmosphere QSN4 What does Neptune's thermosphere containers traces of?  ANS4 carbon dioxide and water