Name: nada j tannen
Date: 1993 - 1999
Why does the earth spin counterclockwise vs. clockwise?
You seem to be asking two questions. Why does the earth spin around
its axis (so that we have day and night), and why does it spin in the
direction that it does.
You can probe the answer to the first question as deeply as you
want to with the help of a good encyclopedia. Start with "Solar System",
and go from there.
Sooner or later you will find that you need to understand "angular
momentum". That's a fun subject - why can you ride a bicycle, for example,
- that you can learn about from a physics text.
The answer to the second question, as far as we know, is "that's
the way the dice rolled". It could have been either way.
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Update: June 2012