THEY say there is no smoke without fire — but for youngsters at a special workshop at the University of Bolton they were taught that ice was just as important.

A class of eager young scientists watched in awe as Dr John Milnes created fires and controlled explosions at the Flashes and Bangs workshop in the university's fire laboratories.

They witnessed fires made from ice, heard a jelly baby scream and made exploding bubbles, before experiencing reactions between chemicals, watched how dust explosions happen and learned how fires burn and spread.

The lesson also taught safety and fire prevention with impressive demonstrations from Dr Milnes, such as a small blaze created in the fume cupboard and a big explosion which children had to cover their ears for.

The event was part of the Manchester Science Festival, which encourages children and young people to play, create and experiment with their scientific sides at various workshops in Greater Manchester.

The University of Bolton event was organised by Dr Gill Smart, who is based in the Institute for Materials, Research and Innovation.

She said: "The science festival events which are run at half term are a great opportunity to showcase the university and encourage our young scientists to peruse their career dreams."

Other events taking place in the town this week include the chance to meet a scientist and learn about different types of plastics, fabrics and other materials, a messy science class which encourages children to take part in hands-on experiments, and a special lesson for future physiotherapists who would like to learn how to strap up a sports injury.

To find out more information, including venues and times, visit manchestersciencefestival.com/whatson/guide.