Hover or tap underlined Spanish terms to see their translation and exam tip.
La composición estructural de la atmosfera terrestre, presenta un estrato a una altura aproximada de 150 kilómetros desde la superficie que hace rebotar hacia abajo las ondas electromagnéticas cortas y medias y no les permite salir al espacio exterior, este estrato o capa se le llama:The atmosphere has a layer about 150 km up that reflects short and medium electromagnetic waves back down, not letting them escape to space. It is called:
Show the answer
Correct answer: b) The ionosphere.
Why it is correct
The ionosphere holds charged gases that reflect radio waves. That is why short wave travels so far.
Why the others are not
- a) It is lower.
- c) It is the outermost layer.
- d) It is the magnetic field.
How to work it out in the exam
- Bounces radio: ionosphere.
Where this question comes from
- Región de Murcia · 2023 · 2ª convocatoria · CY Tipo 1 · question 22 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.