Question

Which of the following statement proves that Earth has a magnetic field?

• A. Earth is surrounded by the ionosphere
• B. The intensity of cosmic rays stream of charged particles is more at the poles than at the equator.
• C. A large quantity of iron- - ore is found in the Earth
• D. Earth is a planet rotating about the North South axis.

Answer 1

The Correct Option is B

The Earth's magnetic field is essential for protecting our planet from charged particles originating from the solar wind. These particles, often referred to as cosmic rays, are deflected and trapped by the Earth's magnetic field, forming what are known as radiation belts.

As these charged particles follow the Earth's magnetic field lines, they tend to accumulate near the poles. This accumulation leads to a higher concentration of particles at the poles compared to the equator.

This phenomenon, known as the auroral ovals, is where the charged particles interact with the Earth's atmosphere, producing the Northern and Southern Lights, also known as auroras. 

Answer 2

The statement that the intensity of cosmic rays stream of charged particles is more at the poles than at the equator proves that the Earth has a magnetic field. This is because the Earth's magnetic field deflects charged particles. Charged particles are deflected towards the poles due to the magnetic force, resulting in a higher intensity of cosmic rays at the poles compared to the equator.