Yes, the fourth one is plasma. Simply put plasma is an ionized gas one that has enough energy is supplied to release electrons from molecules or atoms and allows both species, electrons and ions to coexist.
The ionosphere, also known as the ionosphere, is the part of Earth’s top atmosphere
The range stretches from 60 km (37 miles) up to 1,000 km (620 miles) altitude in a region that encompasses the Thermosphere and parts of mesosphere and exosphere . The ionosphere ionized through sunlight. It plays an important part in atmospheric electricity and forms the edge of the magnetosphere . It is important because, in addition to its other functions it affects radio propagation to distant locations to distant places Earth
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The troposphere
Positive lightning is more risky, as it often is a distance far away from the core of the rain and can strike either in front or behind the storm. It can be as much as five or 10 miles (8 or 16 km) away from the storm in areas that the majority of people would not think of as a lightning-risk zone. The electricity that is generated by the lightning energizes the air sufficiently to turn to plasma after a brief time, which is the typical flash visible on the sky.
Cell phones should be shut off at petrol pumps since they can be an ignition source for the flammable gases in the air. This is a step taken following the acceptance that there is a risk of fire-related accidents as a result of the ignition of batteries on cellphones. For a cell phone battery that ignites the fire, it’s technically possible, but it is not likely.
“cell signaling from phones is insufficient to cause the explosive fumes of gasoline.” People should put the blame on sunlight rather than cell phone signals…if they believe that the signal from a cell phone is responsible.”