Is there a way to take a screen shot on an android phone?
And if so how can I do this?
It honestly depends on your phone. I have a Galaxy S 3 so I am able too and most of them are able to now because of the update.
It's like an iPod
It's based on your phone. A Galaxy S can, but my Evo doesn't have one built in. You can go to the Play store and download a 3rd party app, though.
I have an HTC Droid Incredible 4G - press the power and volume down buttons at the same time, and ... screenshot