Question

Activity 4. Take a tumbler and fill it with water. Cover the mouth of the tumbler with a thick

card similar to that of a postcard. Hold the tumbler with one hand while keeping tha card

pressed to its mouth with your other hand. Turn the tumbler upside down while keeping the

card pressed to its mouth. Make sure that the tumbler is held vertical. Gently remove the hand

pressing the card. What do you observe? Does the card get detached allowing the water to

spill? With a little practice you will find that the card continues to hold the water in the tumbler

even after it is not supported by your hand. Also try this activity by using a piece of cloth to hold

the tumbler in an upside down position

Answer 1

The card doesn't get detached due to vacuum

Answer 2

Answer:

Explanation:

BECOZ of the air which is in it