gs1hard
If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth?
- 1.GPS and navigation systems could fail.
- 2.Tsunamis could occur at equatorial regions.
- 3.Power grids could be damaged.
- 4.Intense auroras could occur over much of the Earth.
- 5.Forest fires could take place over much of the planet.
- 6.Orbits of the satellites could be disturbed.
- 7.Shortwave radio communication of the aircraft flying over polar regions could be interrupted. Select the correct answer using the code given below:
- A.1, 2, 4 and 5 only
- B.2, 3, 5, 6 and 7 only
- C.1, 3, 4, 6 and 7 only
- D.1, 2, 3, 4, 5, 6 and 7
▶ Answer & Explanation
Correct answer: C. 1, 3, 4, 6 and 7 only
Major solar storms, characterized by flares and coronal mass ejections, release energetic particles and radiation. These can disrupt satellite operations, disturb their orbits, and interfere with radio communications, especially near the poles where the Earth's magnetic field is weaker. The electromagnetic disturbances can also induce currents in long conductors like power grids, leading to damage. The charged particles interacting with the upper atmosphere cause auroras. However, solar storms do not directly cause tsunamis or widespread forest fires.
Source: UPSC gs1 2022