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Water
Is the most important liquid for life. In our planet, it has the perfect conditions to be shown in the three states allowing life to develop. Its composition and properties give it special characteristics. It is a substance that is less dense at solid state than liquid, so life underwater is quite easier.
Introductory questions
1. How do the characteristics of water help the body?
2. How does water rise from the roots to the top of a tree ?
3. How do insects walk on the water?
4. Why does ice float rather than sink?
5. Why can people become ill, or die, if they dehydrate?
6. How life in water ecosystems would be affected if ice sank, and water froze from the bottom up?
Try this...
Test the properties of water
The molecule of water
Properties of water
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