Whirlpool
A whirlpool is water that normally goes along deciding to go around instead, usually without warning.
Breeze
A breeze is wind that has been asked to keep it down, and has, mostly, apart from the napkins.
Static electricity
Static electricity is electricity that has stopped moving, at least until you touch a door handle.
Helium
Helium was found in the Sun 27 years before anyone found it on Earth.
Hail
Hailstones grow in layers like onions, and the biggest ever measured in the US was 20 cm across.
Magnet
The most common use of a fundamental force of nature is holding a dentist reminder to a fridge.
Volcano
A volcano is a mountain that keeps the inside of the Earth on the outside, where it can be kept an eye on.
Bubble
A bubble is a small amount of air wearing a very thin coat of water, and it has never once survived being admired.
Moon
The Moon goes round the Earth once a month, pulling the tides along behind it, and is only out at night because it is shy.
Rainbow
Walking towards a rainbow moves it away by exactly the distance walked, so it is always one step further.