Basic Qualification · B-007 Radio wave propagation · B-007-002-011
What is the position of the E region in the ionosphere?
- A Below the F region
- B Below the D region
- C Above the C region
- D Above the F region
Correct answer: A — Below the F region. From the official ISED question bank, verified word for word.
Why
The E region sits in the middle of the ionosphere, directly underneath the higher F region where long-distance radio waves often bounce. The full explanation — and one for every question — is in Pro.
Practise this section
How signals travel: the ionosphere and its layers, skip, ground wave, sporadic E, and which bands work when.