2016 · Q3
Which one of the following layers of atmosphere has high concentration of ions?
indian-world-geographyclimatology
- AStratosphere
- BExosphere
- CThermosphere
- DTroposphere
Explanation
The thermosphere contains the ionosphere, the region with a high concentration of ions and free electrons produced by solar radiation. This ionized layer reflects radio waves and causes the aurora. The stratosphere holds the ozone layer, while the troposphere is the lowest, densest layer. Hence the thermosphere is the correct answer.