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MAKING AIR MOVEMENT WORK FOR US
How is the
movement of air employed in agriculture, business, and industry? At home,
look through magazines and newspapers for pictures showing "air at
work." If it is ok with your
air compressors and vacuum cleaners are used to disperse or pull in materials;
sailing vessels are powered by the wind, which moves them across the water;
Why does a service station need an air compressor? What does a painter do with an air compressor? How does a dentist use an air compressor?
If air movement propels a sailboat, how does the sailor change direction? Does he shake his fist at the clouds and tell the air to make a left turn? ("Hard a-port!")
What have we done that operates similarly to a rocket?
Let's take another try at pinwheels, now that we have a little better understanding of air movement. Are pinwheels similar to windmills? What have windmills done for almost ever? What do modern windmills do for us now?
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