What is the altitude range of the Thermosphere?

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Prepare for the Higher Geography Exam focusing on the Atmosphere. Study with multiple choice questions, receive hints and explanations for each question. Equip yourself for success!

Multiple Choice

What is the altitude range of the Thermosphere?

Explanation:
The thermosphere is the high-altitude layer where the air becomes extremely thin but temperatures rise with height as it absorbs more solar radiation. It starts above the mesosphere, around 85–90 kilometers up, and extends upward to about 600 kilometers or more, blending into the exosphere. So the practical range is roughly 85–600+ kilometers. This explains why satellites, like the ISS, operate in this region and why ionization processes occur there. The lower end of the options corresponds to layers below (the upper mesosphere/stratosphere), and a range beyond 6000 kilometers would be far above the atmosphere.

The thermosphere is the high-altitude layer where the air becomes extremely thin but temperatures rise with height as it absorbs more solar radiation. It starts above the mesosphere, around 85–90 kilometers up, and extends upward to about 600 kilometers or more, blending into the exosphere. So the practical range is roughly 85–600+ kilometers. This explains why satellites, like the ISS, operate in this region and why ionization processes occur there. The lower end of the options corresponds to layers below (the upper mesosphere/stratosphere), and a range beyond 6000 kilometers would be far above the atmosphere.

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