Basic Qualification · B-007 Radio wave propagation · B-007-007-008
Where in the ionosphere does auroral activity occur?
- A At E-region height
- B At F-region height
- C In the equatorial band
- D At D-region height
Correct answer: A — At E-region height. From the official ISED question bank, verified word for word.
Why
Auroral activity happens when charged particles from the Sun collide with gases in the ionosphere, creating the glowing lights we see. 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.