If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects? 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. 5. Forest fires could take place. 6. Orbits of satellites could be disturbed. 7. Shortwave radio communication over polar regions could be interrupted.

Options

1. 1, 2, 4 and 5 only
2. 2, 3, 5, 6 and 7 only
3. 1, 3, 4, 6 and 7 only
4. 1, 2, 3, 4, 5, 6 and 7

Correct Answer

1, 3, 4, 6 and 7 only

Explanation

Solar storms disturb Earth’s magnetosphere, causing auroras, satellite orbit shifts, radio blackouts, navigation failure, and power grid damage — not tsunamis or fires.

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