Ejercicio B · Inglés PAU Madrid Extraordinaria (2ª lengua) 2022

B.1.a) The stronger the magnetic field is, the less likely auroras are.

Solución: FALSE

Evidence for B.1.a: The stronger the magnetic field is, the less likely auroras are.

Solución: "The aurora borealis generally occurs near the Earth's poles, where the magnetic field is strongest."

B.1.b) Scientists have finally explained how the northern lights sounds are made.

Solución: FALSE

Evidence for B.1.b: Scientists have finally explained how the northern lights sounds are made.

Solución: "As convincing as this may have been, scientists still didn't propose a mechanism by which auroral sound could operate."

B.2.a) Why were northern lights a topic of debate among non-experts in the first half of the 20th century?

Solución: Aurora Borealis was a topic of debate because many inhabitants from Nordic countries had reported hearing sounds while seeing the lights in the 1930s.

B.2.b) Why is altitude mentioned in the text?

Solución: Altitude is mentioned in the text because auroras usually happen 100 km high, and the human ear cannot perceive sounds at that altitude, which makes this phenomenon difficult to believe.