n the branch of geology that studies the characteristics and configuration and evolution of rocks and land forms. the branch of geology studying the folding and faulting of the earth's crust. the branch of geology that studies rocks: their origin and formation and mineral composition and classification.
1 Playing violin will not go by itself you know! As they say practice makes perfect. You don't have to practice an hour at once, just start with 15 minutes a day, and if you can keep up the good work, you can increase the practice time a bit every week or so.  Breaking up your practice is helpful.
While I agree, I would also say the amount of time taken to master the violin is related to a) your teacher and their abilities, and b) the amount of time that you practice. Many people take longer periods of time to 'master' the violin, while others can pick it up in a shorter amount of time.