Question

Question 1 Fill in the blanks:
(a) A hydraulic machine acts like a _____________.
(b) A barometer which is portable is a ___________
barometer.
(c) The S.I unit of pressure is _____________.
(d) 1 atm = _________mm of Hg
(e) The pressure on a surface is ________ by
increasing the area of surface.
Question 2. Define the following:
(a) One Pascal
(b) atmosphere
(c) atmospheric pressure
(d) Pressure
(e) Fortin barometer
Question 3 Answer the following:
(a) State Pascal’s Law
(b) Give the principle of a hydraulic machine
(c) How will you predict the coming of a storm in a
place?
(d) What happens on sucking a drink with a straw?
(e) Give two uses of a barometer.
Question 4. Answer the following:
(a) Give two reasons why do use mercury as a
barometric liquid.
(b) What are the demerits of a simple barometer?
Mention only two.
(c) What are the two variations of atmospheric
pressure with altitude?
(d) What is an altimeter?
(e) Give two uses of a hydraulic press.

Answer 1

Answer:

A=force multiplier

C=pascals

Answer 2

Answer:

a) fortin Barrometer

b)