Clouds & Particles

Basics

1. Clouds

1. Observation

Look closely at the steam rising from a water can with boiling water, you will discover a gap between the spout and the steam.

Why do we find this gap?

2. Your body and the water cycle

Around 65 % of the human body is water. Explain how the water in your body is part of the water cycle.

3. Join the water cycle

Go to

http://www.letus.northwestern.edu/projects/gw/cycles/hydro/hydro.html 

to take part in a water molecule's journey through the water cycle. At any time, you decide the molecule's next step!

4. Write a text

Write the story of a water molecule whet it goes through a water cycle and explain the figure.

Authors: Ellen K. Henriksen and Camilla Schreiner - University of Oslo - Norway. Scientific reviewer: Justine Gourdeau - LaMP Clermont ferrand - France - 2004-01-13. Last update: 2004-03-27.