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→Key Stage 4
==Key Stage 4==
===Meaning===
'''Kilojoules''' ('''kJ''') are a [[unit]] of [[energy]] 1,000 times larger than the [[SI Unit]] of the [[joulesJoule]].
===About Kilojoules===
: '''Kilojoules''' are shortened to '''kJ''' with a lower case k and an upper case J.
: [[Kilo]] means one thousand so there are 1,000 [[Joule]]s in a [[kilojoule]].
===Converting to Kilojoules===
{| class="wikitable"
| style="height:20px; width:200px; text-align:center;" |'''Kilojoules'''
|-
| style="height:20px; width:200px; text-align:center;" |1 [[megajoulesmegajoule]] (1MJ)
| style="height:20px; width:200px; text-align:center;" |Convert to '''kilojoules''' x10<sup>3</sup>
| style="height:20px; width:200px; text-align:center;" |1x10<sup>3</sup>kJ
|-
| style="height:20px; width:200px; text-align:center;" |1 [[kilojouleskilojoule]] (1kJ)
| style="height:20px; width:200px; text-align:center;" |Convert to '''kilojoules''' x1
| style="height:20px; width:200px; text-align:center;" |1kJ
| style="height:20px; width:200px; text-align:center;" |1x10<sup>-3</sup>kJ
|-
| style="height:20px; width:200px; text-align:center;" |1 [[millijoulesmillijoule]] 1(mJ)
| style="height:20px; width:200px; text-align:center;" |Convert to '''kilojoules''' x10<sup>-6</sup>
| style="height:20px; width:200px; text-align:center;" |1x10<sup>-6</sup>kJ
|-
| style="height:20px; width:200px; text-align:center;" |1 [[microjoulesmicrojoule]] 1(µJ)
| style="height:20px; width:200px; text-align:center;" |Convert to '''kilojoules''' x10<sup>-9</sup>
| style="height:20px; width:200px; text-align:center;" |1x10<sup>-9</sup>kJ
|-
| style="height:20px; width:200px; text-align:center;" |1 [[nanojoulesnanojoule]] 1(nJ)
| style="height:20px; width:200px; text-align:center;" |Convert to '''kilojoules''' x10<sup>-12</sup>
| style="height:20px; width:200px; text-align:center;" |1x10<sup>-12</sup>kJ
|}