Explain the original goals of sunset and current criticism of sunset?

the sun sets in the west. and rises in the east.

I would use a flashlight to be the sun, and a baseball or similar ball to be the earth and just do a very laymen term demonstration, that way they can see the shadow the flashlight casts on the ball...

If they do not change the rules before the end of the year 2010 they will change in the year 2011.

This is because all the shorter wavelengths have been scattered by the air. The length of the waves is why the sky can appear red.

Consult so-called Horizon Tables in your World or Nautical almanac. adjust to your local time zone and observed time-system ( such as Daylight, standard)