Do a 10 year old and a 17 year old have a big difference ?

Of course!! A ten year old probably barely started puberty and a 17 year old is nearly an adult!

Yes, 7 years exactly.

Very much so. A 17 year old has more knowledge then a 10 year old. And they can stand up for themselves when a 10yr old can't.

Everything you need to know about how your 17-year-old is developing, from ... When they make a promise to their friends, they want to honor their ... Can communicate like an adult; Use slang words often; Cope with new problems and different situations better than in the past ... 10 year old child development milestones.

Duh! The ten-year-old's still a kid and the seventeen-year-old's virtually a grown-up. Unless, of course, you've got a bloody mature ten-year-old or a bloody immature seventeen-year-old, which, I suppose, is also possible. 

my mans why chu askin this question? are you gettin off with a 10 year old? someone bettah call the police and lock yo **** up

my mans you goin to jail

Yes.  One of those two can drive a car and give consent.

Are you retarded? 

are you a pedophile?