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 ………… .

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Solution

(a) The unit of pressure is newton per metre square (N/ m²) .

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

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

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

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