## Content description

Investigate very small and very large time scales and intervals (ACMMG219)

### Elaboration

- investigating the usefulness of scientific notation in representing very large and very small numbers

Source: Australian Curriculum, Assessment and Reporting Authority (ACARA)

#### Standard form

This is a convenient way to represent large and small numbers. It is often called **scientific notation** as scientists are constantly using extremely large and extremely small numbers. For example, physicists investigating atomic structure measure very small quantities such 9.1 × \(10^{-31}\) kg the approximate mass of an electron.

On the other hand, space scientists talk about the distance travelled by light in one year which is 9.46 × \(10^{15}\) m.