Question

The tails of comets point away from the sun due to a form of this phenomenon. For 10 points each:
[10e] The release of a stream of charged particles is known as the “solar” form of what phenomenon? On Earth, the speed and direction of this phenomena can be measured with an anemometer.
ANSWER: wind
[10m] This phenomena occurs when charged particles in solar wind collide with the atoms in the ionosphere.
ANSWER: aurora borealis [accept aurora australis; prompt on “northern lights” or “southern lights”]
[10h] Solar wind drops below the speed of sound at a point in the heliosphere known by this name. The interaction with solar wind and the Earth’s magnetic field forms a “bow” one of these features that forms a protective barrier.
ANSWER: shock [accept termination shock; accept bow shock]
<Science - Other Science - Astronomy>

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