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?
- AScattered wave
- BGround wave
- CIonospheric wave
- DTropospheric 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
Radio wave propagation is section B-007 of the Basic exam: How signals travel: the ionosphere and its layers, skip, ground wave, sporadic E, and which bands work when.
Drill B-007 — free, no account