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A guest post by Sarah, one of the Science Museum's Explainers.

Hello, I’m Sarah, one of the Explainers here at the Science Museum and I’m here to tell you about a day in my life as an Explainer. The first thing to say is that there is no such thing as a typical day!

You may have read my previous blog “Observations of a New Explainer” a couple of years ago. Since then I’ve learnt loads of new things and gained lots of new experiences, such as running our brand new Information Age workshop Code Builder (about basic computer programming) and performing the Feel the Force lecture theatre show to primary schools.

One particular highlight has been learning to present the brilliant Rocket Show, an interactive show aimed at Key Stage 3 children about Newton’s Laws of Motion, so I’ve chosen to tell you a bit more about one of the days when I perform this show.

I have to say that one of the most nerve-wracking things I’ve done since I’ve been here is learning the Rocket Show and presenting it to my very first audience of school kids. Handling a packed show space of 100 plus assorted teenagers, teachers and other visitors is both daunting and thrilling!

I’ve had audiences that have ranged from just a handful of visitors to those packed with very excited and unruly teenagers; enthusiastic holiday-time audiences (my favourite) to shows whereby the kids are so busy texting on their phones or scribbling down notes that they don’t respond!

I’ve learned it’s a real skill to be able to adjust your approach to engage different audiences and give them a memorable and exciting experience…..but that’s what we do!

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Explainer Sarah transferring hydrogen gas from a rubber bladder into a Pringles tube

“What goes into preparing for and delivering a Rocket Show?” you ask. Well, imagine I’ve just rushed up 4 floors to the Launchpad Showspace after an hour in the Garden gallery. After collecting some props, I rush back down four floors behind the scenes of the Science Museum to collect the essential ingredient that gives the Rocket Show its wow-factor…..Rocket fuel!

“What ….isn’t that highly dangerous stuff??”, I hear you cry.  Well, potentially yes, but we take safety extremely seriously. The fuel we use is hydrogen gas which is very flammable and is kept in cylinders outside. Rain or shine (quite often rain!) it’s collected in special rubber gas-bladders and carried (carefully) to Launchpad.

Some of the hydrogen gas is used to fill balloons for use in the show, but what happens to the rest? The rest is used for the amazing indoor rocket that demonstrates Newton’s 3rd Law of Motion (“for every action, there is an equal and opposite reaction”), where we attempt to launch a Pringles tube into Space…something that gets a response from even the teenagers!

So, together with setting fire to stuff and blowing stuff up, we dress up, ride on chairs with wheels and generally have a rocket-tastic time with the help of plenty of brave volunteers and the brilliance of Sir Isaac Newton.

Intrigued?? Why not visit and see a Rocket show!

Explainer Fact: We fire a thousand Pringle Rockets every year.