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Astronomer's Toolbox
The Sun: Quiz
The Sun: Quiz
Only the Sun's outermost layers can be viewed directly because
[A] only the outermost layers emit electromagnetic radiation
[B] it is dangerous to look too deeply into the Sun
[C] inside the photosphere the Sun is opaque, like a thick cloud
[D] the center of the Sun is solid, like the Earth's crust
The Solar Wind
[A] is the result of the Sun's motion through the Milky Way
[B] is made up of charged particles that are heated up so much that they escape the Sun's gravitational field
[C] points in a channeled beam towards the Earth
[D] was discovered around the turn of the century
Sunspots
[A] are cooler and therefore darker than the photosphere
[B] can be bigger than the Earth
[C] are related to the magnetic field of the Sun
[D] all of the above
