EARTH SCIENCE
MAGNETISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Earth’s rotation and revolution around the Sun
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static electricity and electric current in the atmosphere
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charged particles from the Sun and Earth’s magnetic field
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electromagnetic induction and particles in the atmosphere.
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Detailed explanation-1: -A photographer travels to Earth’s north pole to photograph the aurora, a beautiful light display in the sky. Which of the following are most responsible for the formation of the aurora? electromagnetic induction and particles in the atmosphere.
Detailed explanation-2: -The intense heat in Earth’s dense inner core causes the outer core-composed of liquid iron-to swirl and churn, generating electric currents, and driving a phenomenon called the geodynamo, which powers Earth’s magnetic field.
Detailed explanation-3: -Our planet’s magnetic field forms an invisible shield that protects us from the solar wind. From time to time, the solar wind gets stronger and penetrates Earth’s magnetic field. The stream of particles interacts with gases in the magnetic field (the magnetosphere), generating magnificent auroras.
Detailed explanation-4: -Solution: Free electrons are responsible for the current in conductors. An electric current is the charge flow rate per unit of time. The movement of electrons in a wire constitutes the electric current.
Detailed explanation-5: -The north pole of a compass is attracted to the north magnetic pole of Earth, yet like poles repel.