ACT/SAT differences in preparation?

<p>i'm taking the PSAT in october 15th, and ten days later im taking the ACT on the 25th. I've never taken the ACT before, but i feel pretty comfortable with the PSAT/SAT questions.</p>

<p>Will my preparation for the SAT help my ACT scores, or do I have to totally change my strategies and study again for the ACT? Obviously i don't have experience with the science section, but atleast for the other three sections...?</p>

<p>btw, i can get like 2250 on the SAT/PSAT and im a junior</p>