Unspoken, they mean pretty much the the same thing. But when spoken, the emphasis would typically be different, and that can produce a difference in interpretation because it makes the "too" or "also" agree with either "surprised" (first form) or "you" (second form). So:
"Are you also surprised?" could mean what it does in the following:
"So, you're angry, and you're upset, and you're frustrated. Are you also surprised?
"Are you surprised too?" could mean what it does in the following:
"Well I'm surprised, and Paul is surprised, and I'm pretty sure Betty is surprised. Are you surprised too?"
Tom, can you describe what research you've done and your current understanding of how and when to use also? Is there a particular reason you are unsure if this sentence is correct? – pyobum – 2015-03-11T07:41:40.913
Helo and welcome to the site! Please note: Simple proofreading is off-topic for this site and leads to your qustion being closed rather quickly. But if you have a specific point that you are wondering about, please edit your question and we'll be happy to add our own "five cents" to it. – Stephie – 2015-03-11T07:43:02.523
I'm asking because I'm not a native English speaker. I'm not sure if it sounds natural. I would use "Are you surprised too." instead, but I'd like to know if it sounds ok with also too. – Tom – 2015-03-11T07:48:28.993
We sort of assumed this ;-) (neither am I, btw.) @pyobum gave some good pointers and if you need more, see this post on ELL meta which I personally think every new user should read.
– Stephie – 2015-03-11T07:50:56.7535
Related (and this question is possibly a duplicate): http://ell.stackexchange.com/questions/16421/too-vs-also-which-one-is-correct, http://ell.stackexchange.com/questions/10718/too-vs-also-in-i-too-and-i-also.
– Damkerng T. – 2015-03-11T08:51:59.127Another option: Are you surprised as well? – Maulik V – 2015-03-11T09:58:18.133