Question

With the help of an activity show that rate of evaporation , increase with increasing in surface area

Answer 1

Rate of evaporation based on surface area

Activity;
1. Take a cup and a saucer
2. pour water in both cup ad saucer.
3. Keep them undisturbed for a time.

What will you observe now is the rate of evaporation is more in saucer comparing the cup.This is because of saucer having open surface whereas cup doesn't have. So evaporation rate is more in saucer than cup.


Hope this helps you.
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Answer 2

Activity

• Take two wet cloths
• now let both of them to dry bt one cloth should be spread and one should not
• u would find that the spread cloth dry faster then other as it's surface area is more that then other.

plz refer above attachment for explanation...

hope it helps ya....