Reversible motors will usually say that on the nameplate (some, but not all, non-reversible motors will state the direction in which they turn). If your motor has a wiring diagram plate, that will also give you a clue.
On an AC motor, reversing the leads on the terminals won't, all by itself, reverse motor direction, because the electricity's not directional - alternating current reverses direction 60 times a second (American standard; different in some other countries). You reverse an AC motor by changing how several different wires are tied together, and then tied to the incoming power. The lack of wires to rearrange, on the picture you've shown, inclines me to think this may be a non-reversible motor, unless there's a different place to do that.