umm its hard to tell cause i dont know what kind of build you have cause i was like 250lbs when i was 14, but i was also 6'0. seems kinda light though, but like i said i dont know your build so i cant make a good jugdement.
no thats about right for a 14 year old. but there are body fat%, body type, lean muscle mass, water retention, and we know hight and age. all of which are important factores in developing an accurate picture. why would you care anyway?
i'd say your about average (with no other info), but your weight isn't as important as your bodyfat percentage, if you get that measured post it here and you will get a lot more specific answers
Heh, don't worry about it. You body may just be different than others. Like me, I weigh in at about 130 lbs and am 5'10". But I have a decent amount of muscle and can lift with guys that outweigh me by 30 lbs. I'm not skinny either, my body fat is around 15%.
yeah they usually can tell you with the use of calipers, dont bother getting one of those electrical impotence tests done if you pay for its a waste of money and there about 99% inaccurate. calipers are usally pretty accurate, if you want a rough and i mean rough estimate try these sites.
last one its probally the best can use tape measure and calipers.