Basic Qualification · B-007 Radio wave propagation · B-007-007-004
What term describes that portion of a transmitted wave kept close to the Earth's surface due to bending in the atmosphere?
- A Scattered wave
- B Ground wave
- C Ionospheric wave
- D Tropospheric wave
Correct answer: D — Tropospheric wave. From the official ISED question bank, verified word for word.
Why
A tropospheric wave is the part of a radio signal that bends or curves within the lowest layer of our atmosphere, the troposphere, allowing it to follow the Earth's surface over the horizon. 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.