Changes

==Key Stage 4==

===Meaning===

===About High Level Nuclear Waste===

: '''High level nuclear waste''' requires shielding to prevent [[irradiation]] of living [[organism]]s and containment to prevent [[Radioactive Contamination|contamination]] of the [[environment]].

: '''High level nuclear waste''' releases a lot of [[energy]] which increases the [[temperature]] of the [[material]] so it requires cooling to prevent it [[heating]] up so much that [[Melting|melts]] or catches fire.