Explorations: Introduction to Astronomy (Arny), 6th Edition

Chapter 1: The Cycles of the Sky

Thought Questions

1
If you were standing on the Earth's equator, where would you look to see the north celestial pole? Could you see this pole from Australia?
2
Draw a sketch of the Earth and persuade yourself that your latitude is the angle of the north celestial pole above the northern horizon.
3
Can you think of an astronomical reason why the zodiac may have been divided into 12 signs rather than 8 or 16?
4
If the shape of the Earth's orbit was unaltered but its rotation axis was shifted so that it had no tilt with respect to the orbit, how would seasons be affected?
5
Why does the position of sunrise along the eastern horizon change during the year?
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