Introduction
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© Digital Vision LTD
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Air…Air…It's everywhere
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An understanding of the properties of air is the basis for understanding
weather. The problem for young children is that air cannot be seen because
it is invisible. Its existence can only be inferred by the effects air
has on objects. Air makes trees sway, feels cool on our faces, makes flags
unfurl, drives sailing ships and so on. But, what happens when air is
still? A young child will often infer that air is not there, gone away
or does not exist. In the investigations that follow, students identify
several ways in which air affects other objects and use those effects
as evidence for the presence of air.
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