Molded polystyrene is best. Carved and sanded balsa wood is good
no
Foam board or cardboard.
typically the nose cone is filled with a parachute to the rocket arrives on the ground safely.
It streamlines the nose, so the rocket flies faster.
"Rocket nose cone" pretty much says it all, I really don't think there is another suitable name.
You use fins and a nose cone on a bottle rocket because the cone reduces the drag on the rocket, and the fins help stabilize the rocket.
It streamlines the rocket and allows more speed.
It streamlines the nose.
nose cone
A perfect cone
While a nose cone can either reduce or add drag, it provides a minimal amount of stability to the rocket' flight path. The fins are the most critical component for stabilizing a rocket's flight path; that's where your focus should be.
nose cone