Misc: What is the symbol of the sign of the zodiac Aries?

Questions

"Mathematics" : The square root of 1 is?

"Meteorology" : If the groundhog sees his shadow on Feb. 2, there will be how many more weeks of bad weather?

Americanisms : Britains say 'tarmac'; Americans say ________.?

Anatomy : Your ____ holds your head to your shoulders.?

Arts : In what field of study would you find "flying buttresses"?