Name: Michael C.
A Question from my 5yr old son - What makes the Earth spin? Why doesn't it stop?
Many thanks, in anticipation!
A good question that people have discussed for a long time. Here are a couple of thoughts.
Watch the water go down the drain. When gravity pull it down, is spins. When the earth first formed, is
was pulled in just like the water. That may have started it spinning.
Why doesn't it stop? The bigger something is, the harder it is to stop. Have you ever spun a top? It
keeps on spinning for a while... and the bigger the top, the longer it will spin. The earth is really
big, so it will spin for a long time.
Hope that helps.
Click here to return to the Physics Archives
Update: June 2012