Yes, because the fizz is created due to the excessive pressure released which is sealed inside the bottle for carbonatiomNow, the pressure release procedure`s intensity is dependent on external environmental pressure.
						

							
The cold drinks will give more fizz at the top of the hill , because, the fizz is created due to the excessive pressure released which is sealed inside the bottle for carbonation. Now, the pressure release procedure's intensity is dependent on external environmental pressure.
						

							
there will be more fizz because it is formed due to exessive pressure and is more at hills.................
						

							
The cold drinks will give more fizz at the top of the hill , because, the fizz is created due to the excessive pressure released which is sealed inside the bottle for carbonation.
Now, the pressure release procedure's intensity is dependent on external environmental pressure.
When the internal and external pressures are same the procedure will stop.
Now in the hill top the external pressure is very low and that's why the pressure difference is very high which causes a strong fizzing process.