there are many nozzle's used on a rocket, this question does not have a specific answer.
Anything from card board tubes and balsa wood, to exotic heat resistant tiles. See discussion.
Usually a fuel and an oxidizer. These can be liquid or solid or a combo of the two
Aluminum and titanium are used in rockets to provide strength, light weight, and high temperature stability. They are also resistant to corrosion.
carbon material
Nozzle
It is called a nozzle
Igniter, Motor Case, Nozzle, Insulation and Propellant
there is the nozzle, the fins, the nose cone, the pumps, and the frame
By expelling hot gasses extremely fast from the rocket nozzle. Due to the conservation of momentum, expelling mass at high velocity causes the rocket to gain momentum and therefore velocity.
You get the rocket nozzle after you open the rocket nozzle box in the level with the blooper boss.
Jump on a red box with a weird symbol on on it and take nozzle that comes out. You have obtained the rocket nozzle.
To shoot the rocket up into the sky.
It depends on how many shines you get. when you have enough shines shadow Mario will appear holding a rocket nozzle, turbo nozzle, or a Yoshi egg
NOZZLE
The function of a rocket nozzle is to allow the thrust to be focuses and amplified. It also prolongs the burn time and greatly increases performance.
I know that you have to get 50 Shine Sprites to get the zoom nozzle and Yoshi, but I have no clue about the rocket.
A rocket exhaust nozzle that can be aimed in any direction.
Thrust Chamber
nozzle
Nozzle
They both have fuel. They both have to be stable. And they both have a nozzle.