CHAPTER 1

CHAPTER 1

by ISDAYANTI ISMAIL

​PHYSICS AND MEASUREMENT

​STANDARDS OF LENGTH, MASS AND TIME

1. ​readily accesible

2. ​posses some property that can be measured

3. ​yield the same result

4. ​not change with time

Multiple Choice

state prefix of :

10 ^-3

• kilo

• milli

• deci

• pico

Multiple Choice

State prefix of:

10¹²

• yotta

• nano

• Tera

• Mega

Multiple Choice

State prefix of :

10^-15

• femto

• micro

• centi

• Giga

Multiple Choice

State prefix of : 

10⁶

• nano

• micro

• Zetta

• Mega

​PREFIXES

​A symbol we place in front of a unit.

It will indicate the mulriple of the unit

• ​

​Derived Units

​Combination of base units (SI units)

​

​Example : Force (kgms^-2)

​ Density (kgm^-3)

​Conversion of Units

​A solid piece of lead has a mass of 23.94 g and a volume of 2.10 cm3. Calculate the density of lead in SI units.