# Crossing the Equator

Sue is traveling by ship from south of the equator to the north. She has a nice little cabin with a bathroom, but no window. Sue has neither a compass nor any other instruments. Just the general luggage one brings on board a long cruise. Yet, without leaving her room or talking with anyone, Sue will be able to tell when the ship has crossed the equator. How?

### 4 guesses to Crossing the Equator

• Paul

When she flushes the toilet in her bathroom, the water will rotate the other direction.

• You’re right, Paul.
As they cross the equator the water will begin to drain in the opposite direction.
You’re today’s winner!

• Geoff

Although technically it doesn’t

http://en.wikipedia.org/wiki/Flush_toilet#Swirl_direction

• Yes, we capitulate to Geoff. Theoretically, the influence of changing hemispheres on the flow of water down a basin is too minute to affect it one way or another. The RiddleDude concedes this point. It is such a widely-believed myth that we think the riddle still has merit. Hope you did to.