What is measurement, why is it important and how do we measure things?

1. Presented by:
Hiba Khan
Hirah Ismail
Maham Nizamani
Vareesha Ali
on 02-09-2016

2. INTRODUCTION
Measurements and Measurement
Systems are today’s most important
and useful topics to learn, discuss and
identify. So, in order to take perfect
measurements, we need to measure
correctly and for that we must know
the measuring procedure and
measuring systems.

3. DEFINITION
Measurement: Measurement is finding a number
that shows the size or amount of something.
Systems of Measurement: there are two
main systems of measurement in the world: the
Metric (or decimal) system and the US
standard system. In each system, there are different
units for measuring things like volume and mass.

4. METRIC SYSTEM OF
MEASUREMENT
The metric system is a system of
measuring. It has 3 basic units:
 m the meter for length
 kg the kilogram for mass
 s the second for time
All the other units are derived from
these 3 basic units.

5. US STANDARD SYSTEM
United States Standard System is a system of
measurements commonly used in the United States.
The US Standard System developed from English
units which were in use in the British Empire before
American independence. However, the British system
of measures was overhauled in 1824 to create
the imperial system, changing the definitions of some
units. Therefore, while many U.S. units are essentially
similar to their Imperial counterparts, there are
significant differences between the systems.

6. INTERNATIONAL SYSTEM OF
UNITS
The modern form of the metric system is known as
the International System of Units and is the most
widely used system of measurement. It comprises a
coherent system of units of measurement built on
seven base units.
 Metre for length
 Kilogram for mass
 Second for time
 Ampere for electric current
 Kelvin for temperature
 Candela for luminous intensity
 Mole for amount of substance

7. We can measure many different things,
but mostly we measure Length, Area,
Volume, Mass and Time.
Length: Distance from end to end.
Eg: Height of Hirah Ismail is 5 feet 1
inches.

8. Area: The extent or measurement
of a surface.
Eg: Area of human brain is 1130
centimeter squared.

9. Mass: Mass is the measure of
how much matter is in an object.
Eg: Hirah has mass of 5.306 kg
Weight: The product of mass
and gravitational pull.
Eg: Weight of Hirah is 5.306*9.8 =
52 newtons

10. Volume: The amount of
space (3 dimensional) that an
object or substance occupies.
Eg:
Hirah has 4.65 cubic metres
of blood in her body.

11. Time: The indefinite continued
progress of existence and events
in the past, present, and future
regarded as a whole.
Eg: Hirah’s heart rate is 99 to 105
beats per minute.