electrics and acoustics sound different....but the tunings are typically the same even though, as willdridge has said, you can use different tunings.
electics typically sound higher, have that more light sound...especially with a strat. acoustics usually have a more full sound with a good mix of treble, mids and bass.
you can give your electric a fuller sound by experimenting with the settings on your amp.
try putting your treble on 6, mid on 4, bass on 5 or 6. and try putting your pickup selector on your guitar in the middle or all the way up (for your neck pup)
hope that helps. and soundclick is a great site to upload your music FOR FREE.