How long does it take the earth to go around the sun?
It takes one year, 365.25 days to make one rotation around the sun.
4/5 - 2/3 =
Why do we get dizzy?
The reason why we get dizzy is that the brain is being told two conflicting things from different sensors. The fluid-filled channels in our ears will tell the brain that we are moving while our eyes tell our brain that we are standing still. So this leads to the brain thinking well both are true so our head must be spinning.