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T3A11
Which region of the atmosphere can reflect HF radio waves?
Pick an answer to check it.
Answer: C. The ionosphere
The ionosphere, a layer of charged particles high above Earth, can bend HF radio waves back to the ground. This is what makes long-distance HF contacts possible. The troposphere is lower and is where weather happens.
Tip: Ionosphere = Ions that bounce HF back down.