Hi and welcome to the Forum!
Has this iPad been in normal use before you set it up as an info kiosk?
Do you have any other apps open on the iPad?.....I ask because if you have, the iPad could be having a problem with ram and this is what is causing the crashing. Apps left open, while they are not actually running, do take up some ram. Your app could also just be playing up, so close it also and then relaunch it.
From the home screen do the four finger swipe up or double press the home button to reveal your multi task bar - Long press the app until it jiggles and a red minus sign will appear above it. Press the minus signs to close the apps completely.
Location settings also use ram, so close all these. Settings - Privacy - Location Services.
And then there's Safari which saves small bits of info from every site visited and also takes up ram. So deleting your history and cookies may make a difference here. Settings - Safari - Clear History and Clear Cookies and Data.
If it's only ever been used in this way then the above may not make a difference, although I would still clear Safari as your iPad accesses a site. I would try a reset of your iPad and see if this makes a difference here.
Hold the power off button and the home button simultaneously, keep holding them in and you may see the power off slide appear and disappear, wait until you see the Apple logo appear before releasing the buttons. It will take a little longer for your iPad to start.
You haven't said what model the other iPad is. iPad 1 only has 256mb of ram, the iPad 2 has 512 mb and the newer iPads have 1 gb. So just the kind of iPad you have can make a difference with a crashing issue.
I don't know of any sequence of keys on the keyboard which could cause this.
I hope this helps.