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ABSTRACT
Over the years teaching astronomy for
non-science majors I have been asked many insightful questions dealing
with common day phenomena. For this Journal Club I have condensed some
of these into the following true/false statements:
- At Equinox day and night are equally long
- Moon’s apparent size is the same high and low in the sky
- Midnight Sun (at sea level) is only seen above the Arctic
Circle
- Summer and winter half of the year equally long
- Sunset is the earliest at winter solstice
- Total day-hours over the year is the same everywhere on
Earth
The statements are simple and would be
understood with little additional explanations by most; however, the
correct true/false answers are not all that straight forward. (No, I
have not used any of them as exam questions). I will go through the
issues involved to reach the correct true/false answers, and I hope
that, besides a little new insight into orbital mechanics, the
statements might provide topics for conversation, or maybe even a bet,
on an otherwise slow night at the Pub. .
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