How to page up/down in MS Word using trackpad?

Hi there,

Can anyone please tell me how to page up and page down in MS Word using the MacBook Pro trackpad?

I am able to do this in Acrobat Reader by simply selecting 'Fit One Full Page' from the drop-down menu next to the icon that looks like a page. After that every time I flick the trackpad up or down with two fingers it simply 'pages up' or 'pages down' for me.

But I cannot seem to get this to work on MS Word, unless I hold down the Fn key and then press the up or down arrow key.

But is there a way of doing this using the track pad?

I have attached a picture of the icon on Acrobat if that helps at all.

Thank you.