Question

Answer the following questions.
(a) Define:
i. measurement ii. physical quantity iii. mass
iv. regular body V. SI system
vi. CGS system
(b) Name the devices used to measure the volume of liquid.
(c) Define volume. Write its Sl units.
(d) Describe an experiment to find the volume of an irregular stone.
(e) How do you find the volume of a rectangular brick?
(f) SI units are used for scientific works. Why?
(g)
What is area? Write the relation of ma with its multiples.
(h) What is volume? Write the relation of mº with its sub-multiples.
(1) Describe the method of calculation of the area of a rectangular body in short.
0) Write the name of the means used to measure the volume of liquid.

Answer 1

I. measurement is a comparison of an unknown quantity with a known fixed quantity of the same kind.

ii. physical quantity is a property of a material or system that can be quantified by measurement .

iii. the amount of matter present in any object or body is called mass . Everything we see around us has mass.