Is my yeast dead?

Maybe a dumb question, made a small batch (one gallon jug) of Irish red ale this afternoon, and just took a look at it their is nothing at the top of the jug it has all fallen to the bottom, does this mean the yeast is no good? is their anything that can be done?

You were seriously expecting activity within a couple hours? If nothing happens after 72 hours (but it will), let us know.

Thank you for the reply, am very new to home brewing, but make a lot of bread so just thought the yeast would start to work sooner

Relax, it will happen soon.