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*[[Millimetre]]s - The [[length]] of an [[insect]].
*[[Micrometre]]s - The [[length]] of a [[Cell (Biology)|cell]].
==Key Stage 4==
===Meaning===
[[Distance]] is a [[scalar]] quantity representing how far an [[object]] has travelled.
===About Distance===
: [[Distance]] is a [[scalar]] because it has [[magnitude]] but not direction.
: The [[SI Unit]] of [[distance]] is the [[metre]].
: [[Distance]]s may also be referred to as [[length]]s.
: [[Width]], [[height]] and [[depth]] are a type of [[distance]] between the edges or sides of an [[object]].
: [[Distance]] travelled is used, along with [[time]], to calculate the [[speed]] of an [[object]].