Hover or tap underlined Spanish terms to see their translation and exam tip.
Las ondas hertzianas y sobre todo la onda corta (HF) y la onda media (MF), se reflejan en la capa o estrato de la atmosfera terrestre denominada:Radio waves, and above all short wave (HF) and medium wave (MF), are reflected in the atmospheric layer called the:
Show the answer
Correct answer: a) Ionosphere.
Why it is correct
The ionosphere contains gases ionized by solar radiation that reflect medium- and high-frequency radio waves back towards Earth. That gives short wave its long range.
Why the others are not
- b) Invented distractor name.
- c) The outer region governed by Earth’s magnetic field.
- d) Not a real atmospheric layer.
How to work it out in the exam
- MF and HF reflection: ionosphere.
Where this question comes from
- Región de Murcia · 2021 · 3ª convocatoria · CY Tipo 1 · question 22 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.