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Questions and observations for students:
1. What was the farthest paper from the spray bottle on which you could see droplet stains?
2. How would you rate the number of droplets on the third paper?
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• Microdroplet spray is reduced by a cloth barrier
• Microdroplets are carriers of germs
• Most droplets are contained by the face cover
• Some droplets get through and land on surfaces so…make sure to wash your hands, face covers and avoid touching objects
to prevent the spread of illness!
How well does a cloth cover stop sprayed droplets?
(continued)
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Low 0–10 Medium 11–100 High 100–500 Very High 500+
