Question

Characteristics of ionosphere and exosphere

Answer 1

Characteristics of the Ionosphere.
Critical frequency. Layer height will determine how far a radio transmission travels.
Characteristics of exosphere.
The particles in the exosphere are extremely far apart. They don't quite fit the definition of a gas because the density is too low.

Answer 2

Ionosphere:

1)Extends from 80-

480km

2)Reflects radio waves.

Exosphere :

1)Extends above 480km

2) Rarified hydrogen and

helium are found