WHY? This is Bernoulli's Principle: Faster moving air exerts a lower pressure than slower moving air. As the air you blow rushes to the edges of the card, a low pressure area is created. The higher pressure behind the candle bends the flame toward the card. ASSESSMENT: Can the student communicate what they observed?

The student is able to communicate that the faster moving air at the edges of the card creates a low pressure area. The higher pressure behind the candle bends the flame toward the card. The student is able to communicate that faster air at the edges of the card changes pressure. The student is able to communicate that the flame bends toward the card due to blowing. The student is able to communicate that the flame moves.

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Last modified: Sun Aug 10 18:00:59 PDT 1997

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