Yes as it control the dirctions of the rocket.
by water being placed into the bottle and then, when you launch your rocket, the rocket will spin (if it has at least 2 fins) and the water will spurt out and make the rocket go higher in the air. (Tip:the more it spins,the higher it will fly)
if the sky is blue, the answer is yes
4, Why? More stabilization, helps it fly straight up.
the rocket is pushing water downwards which means that the water pushes the rocket upwards very hard that it can overcome gravity and fly.
Pressure builds up, and when it is released it forces the rocket up.
Add guide fins to the body of the rocket.
Get a huge bottle of soft drink (Cokes good), place mentos inside and shake bottle. leave the lid on loosely. Place a rocket on top, then, watch it fly!!
alkaselser and water
the right amount of water to put in a bottle rocket so it will fly high is 70 milliliters
Yes if you use compressed air inside the rocket. Or you can use agitated methanol and a flame for thrust like a whoosh rocket.
A good balance of propulsion and weight, and make sure that it has a good aerodynamic structure, because sometimes the nose of a rocket tends to be in a shape that creates more wind resistance.