Match the following.

Answer the following question.

Why does ink not spill out of an ink dropper?

Fill in the blanks.

(a) The unit of pressure is _______.

(b) Ink rises into the ink dropper because of the _______ pressure acting on the surface of the ink in the bottle.

(c) When the piston of a pump is pulled up, the pressure inside _______.

(d) The air pressure inside our body is equal to the _______ .

Are the following statements true or false?

(a) The pressure of air inside an inflated balloon is equal to atmospheric pressure.

(b) Fluids always flow from higher pressure to lower pressure.

(c) If area is reduced, pressure is reduced.

(d) Standing on a cane chair increases the possibility of the cane breaking due to increased pressure.

Carry out this simple experiment to test the strength of atmospheric pressure.

Fill a glass with water. Place a dish on it upside down. Holding the dish in place with your hand, turn the glass over. Place the dish on a table.

Take a few 50 paisa coins. Slide one coin under the edge of the glass without disturbing the water even slightly. Now, slide a second and third coin under the glass in the same way. You will see something remarkable. The glass is standing on three coins but the water inside does not spill out ! This is the magic of atmospheric pressure. With practice, you will learn to do this experiment quite easily. Then you will even be able to make the glass stand on piles of coins without spilling all the water ! Try it, have fun !