Download Question 1: The average distance from Earth to the sun is

Review Quiz No. 11
Question 1:
Explosive events related to the acceleration
of high-energy particles near the sun which
can reach Earth and interfere with the Earth’s
magnetosphere are known as …
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coronal mass ejections.
spicules.
looped prominences.
sun spots.
convection events.
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Question 2:
If a star has an apparent
magnitude of mV = 3.5 and an
absolute magnitude of MV =
4.9, we know that its distance
from Earth must be …
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more than 10 pc.
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equal to 10 pc.
less than 10 pc.
equal to 10 light years.
… That doesn’t tell us
anything about its distance!
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Question 3:
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For the star Canopus, we measure a
trigonometric parallax of 0.033 arc seconds.
What is Canopus’ distance from Earth?
0.033 parsec.
0.033 light years.
30 parsec.
30 light years.
9.2 light years.
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Question 4:
The method of the trigonometric
parallax to measure distances to
nearby stars uses the distance
between … as a base line for
triangulation.
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the astronomer’s two eyes
two telescopes on opposite sides
of the Earth
the Earth and the moon
the Earth and the sun
the sun and Alpha Centauri
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