GEOLOGY

Detailed explanation-1: -The lower part of the Thermosphere, a layer of ionised air extending from the Mesopause to approximately 600km is also known as the Ionosphere, while the upper part of the Thermosphere is also known as the Exosphere.

Detailed explanation-2: -At the bottom of the thermosphere is the mesopause, the boundary between the thermosphere and the mesosphere below.

Detailed explanation-3: -The thermosphere is the layer in the Earth’s atmosphere directly above the mesosphere and below the exosphere. Within this layer of the atmosphere, ultraviolet radiation causes photoionization/photodissociation of molecules, creating ions; the thermosphere thus constitutes the larger part of the ionosphere.

Detailed explanation-4: -The name ionosphere comes from the fact that gases in these layers are excited by solar radiation to form ions, which have an electrical charge.

Detailed explanation-5: -Located within the thermosphere, the ionosphere is made of electrically charged gas particles (ionized). The ionosphere extends from 37 to 190 miles (60-300 km) above the earth’s surface. It is divided into three regions or layers; the F-Region, E-Layer and D-Layer.