Question

Place a candle in the beaker and light it. Light an incense stick.


which way does the smoke flow when the incense stick is kept near the edge of the mouth?

which way does the smoke flow when the incense stick is kept a little above the candle?

which way does the smoke flow when the incense stick is kept in other regions?

Answer 1

keep in the open area because to burn anything it want oxygen and air

Answer 2

Answer:

We observe that, the smoke of the incense stick, held above the candle goes in upward direction. This is because, the air above the candle is hot and lighter. While the air at the edges of the beaker is comparatively cooler, so the smoke goes slightly upwards and then spreads in downward direction.

6) These patterns of flow of smoke reveal that air currents are caused by uneven heating of air.

Answer Image

Explanation:

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