Page 24 - Grade 5 - unit 1

Alex: Why does Earth spin?
Dr. Gene E. Us: Earth was spinning when it formed, and
nothing has ever gotten in its way and interrupted it.
One of the laws of motion, after all, is that an object will
keep moving until something gets in its way.
Ed: What would happen if Earth did suddenly stop
spinning?
Dr. Gene E. Us: Everything on the planet would keep
on moving at about a thousand miles an hour! Can you
imagine the mess we would have if everything shifted
at that speed? And speaking of shifting, I really need to
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