How can you cause subliming? – Secondary 11

Question: How can you cause subliming?
- Keywords:
  sublimation
Asked by kamilo12 to David, Jonathan, Ou, Pete, Sam on 28 May 2012.
- Pete Etchells answered on 28 May 2012:
  
  I haven’t really thought about this since I was at school, so I might be wrong here! I think it’s caused when you drop the temperature of a substance high enough or low enough quickly so that it skips turning into a liquid, and goes directly from a gas to a solid (or vice versa). I think it usually involves really big and fast temperature changes, along with high pressures.

Question: How can you cause subliming?