Civil Defence is launching a fresh drive to make sure people know exactly to do if an earthquake hits, with new television and radio advertisements.
The television ads began broadcasting on Thursday and show children describing what they think earthquakes are and demonstrating the slogan Drop Cover Hold.
A Civil Defence spokesperson, Chandrika Kumaran, says the Canterbury earthquakes prompted the new campaign.
She says the slogan has been around for a long time, but these are the first television and radio advertisements to support it.
Ms Kumaran says Civil Defence is also developing material in five languages other than English.