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|aphelion ||Equation of Time ||mean Sun
|perihelion ||time zone
- How many minutes difference is there between your local noon and somebody's
local noon 3 degrees longitude east of you? Will their local noon occur
before or after yours?
- The Eastern Standard Time zone is 3 hours ahead of the Pacific Standard
Time zone. The Pacific timezone meridian is at 120° W longitude. What is
the longitude of the Eastern Time zone meridian?
- Is the Sun's drift eastward greater at the solstices or the equinoxes? Why is that?
- Is the solar day longer at perihelion or aphelion? Why is that?
- What causes the temperature differences between the seasons? How so?
- If you shine a flashlight on a flat tabletop, which gives you a
smaller concentrated beam: one directed perpendicular to the tabletop or one
directed parallel to the tabletop? Which one produces the longer shadow of
a pencil on the tabletop?
- How would the fact that the Sun's angular size is largest around January
4 contradict the popular theory that the Earth's distance from the Sun in its
elliptical orbit causes the seasons?
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last updated: 04 May 2001
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