General Knowledge - World Geography - Discussion

Option "B" is corect because ionosphere is part of thermosphere.

Ionosphere and exosphere are the parts of the thermosphere. So, thermosphere and exosphere are included in the Ionosphere.

Ionosphere and exosphere are the parts of the thermosphere. So, thermosphere and exosphere are included in the Ionosphere.

I think option (b) is the correct answer because there is five distinct layers of atmosphere i.e. troposphere, stratosphere, mesosphere, thermosphere and exosphere. So basically ionosphere is the only part of thermosphere because the dynamics of the thermosphere are dominated by atmospheric tides which are driven by the very significant diurnal heating.

Ionosphere and exosphere are part of thermosphere itself. So the question should be reconsidered.

The ionosphere is a region of the atmosphere that is ionized by solar radiation. It is responsible for auroras. During daytime hours, it stretches from 50 to 1, 000 km and includes the mesosphere, thermosphere, and parts of the exosphere.

However, ionization in the mesosphere largely ceases during the night, so auroras are normally seen only in the thermosphere and lower exosphere.

Answer should be thermosphere only.

I don't think mesosphere includes the answer.

I think option (b) is the correct answer because there is five distinct layers of atmosphere i.e. troposphere, stratosphere, mesosphere, thermosphere and exosphere. So basically ionosphere is the only part of thermosphere because the dynamics of the thermosphere are dominated by atmospheric tides which are driven by the very significant diurnal heating. Atmospheric tides dissipate collision between the neutral gas and the ionospheric plasma.

Because ionosphere and exosphere are parts of thermosphere.