What kinds of things blow in the wind? On a windy day we'll set up a wide board in a field or open space on the school grounds. We'll place this "wind barrier" in such a way that the wind will blow against it.

We can coat the board with some glue, paste, or strips of tape with the sticky side out. In one-half hour, we'll go look at the board and see what kinds of things have been blown to us by the wind.

We need to record, in our notebooks, not only the kinds of things that blew in, but if there is any correlation between the kinds of particles found at the top of the board and those at the bottom. Are lighter-weight particles carried higher in the wind than lower-weight particles?

On a day when there is either less or more wind, we can repeat the activity and make comparisons as to what has blown in and whether it landed higher or lower on the board, than it did the first time we did this project.

Let's also discuss the way it feels on our faces and arms when we walk in the wind, both when there is dust or sand blowing along, and when the wind seems fairly clear of
particles.