What is the cause of the formation of 'Aurora Borealis'?
What is the cause of the formation of 'Aurora Borealis'?
AIt occurs when sunlight hits ice crystals in cirrus clouds that are very high in the sky
BIt is formed when there s a reflection of light from the sun and the moon form various small ice crystals suspended in the air
Cthe collisions between gaseous particles in the Earth s atmosphere with charged particles released from the sun s atmosphere
DIt is formed when a concentrated bright spot is seen on one or both sides of the sun
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correct answer is: option c [the collisions between gaseous particles in the Earth's atmosphere with charged particles released from the sun's atmosphere]
Explanation: The Aurora Borealis (Northern Lights) is caused by collisions between charged particles (electrons and protons) released from the sun's atmosphere and gaseous particles (primarily oxygen and nitrogen) in the Earth's atmosphere. These collisions excite the atmospheric gases, causing them to emit light of various colors.
- Option a: This describes a halo, an optical phenomenon caused by ice crystals, not the aurora.
- Option b: This describes a different kind of atmospheric optical phenomenon involving ice crystals, not the aurora.
- Option c: This accurately describes the process by which auroras are formed. The solar wind carries charged particles which interact with the Earth's magnetic field and are directed towards the poles, where they collide with atmospheric gases.
- Option d: This describes a sun dog, a bright spot alongside the Sun, which is different from Aurora.
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