# Physical Quantities

Card 1: What are physical quantities?

## Physical Quantities

1. A physical quantity is a quantity that can be measured.
2. A physical quantity can be divided into base quantity and derived quantity.
Card 2: What are base quantities?

## Base Quantities

Base quantities are quantities that cannot be defined in term of other physical quantities.

Card 3: State the 5 base quantities and their SI unit

## 5 Base Quantites

 Quantity Name of Unit Symbol of Unit Length metre m Time second s Temperature Kelvin K Mass kilogram kg Current Ampere A
Card 4: What is derived quantities?

## Derived Quantities

A derived quantity is a Physics quantity that is not a base quantity. It is the quantities which derived from the base quantities through multiplying and/or dividing them. Card 5: What is derived unit?

## Derived Unit

The derived unit is a combination of base units through multiplying and/or dividing them. Card 6: What are prefixes?

## Prefixes

Prefixes are the preceding factor used to represent very small and very large physical quantities in SI units.

 Prefixes Symbol Value Tera T 1012 Giga G 109 Mega M 106 kilo k 103 desi d 10-1 centi c 10-2 mili m 10-3 micro µ 10-6 nano n 10-9 pico p 10-12 fento f 10-15
Card 7: What are scalar quantities?

## Scalar Quantities

1. Scalars are quantities which are fully described by a magnitude alone.
2. Examples of scalar quantities are distance, speed, mass, volume, temperature, density and energy.
Card 8: What are vector quantities?

## Vector Quantities

1. Vectors are quantities which are fully described by both a magnitude and a direction.
2. Examples of vector quantities are displacement, velocity, acceleration, force, momentum, and magnetic field. Copyright © 2008 Home Education Concept. All Rights Reserved 