The answer depends on where you want to fly it to.
burning fuel (rocket propellant)
You take the menure out and use that
In the rocket engine large amount of fuel are burnt. The burning fuel expands and is forces itself out the bottom of the rocket. As it pushes down, it pushes the rocket up. If the force pushing the rocket up exceeds its weight, the rocket will take off.
Rocket fuel is very heavy and it would take more rocket fuel for the launch to carry the weight of the fuel for retro rockets.
Yes a rocket usually has 2 or more stages, to take off, a lot of fuel is required, after reaching the required orbit, carryin so much extra fuel would be a burden so before the rocket settles in the orbit, 1 or more stages maybe removed
Actually its the other way around, if a rocket were to launch off the moon it would take less fuel than if it had launched off of earth. It would take less fuel because the moon has lighter gravity.
During ascent, the rocket burns the fuel in it's tank, which comprises most of it's weight.
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There are 2 solid rocket boosters (white things) and one fuel tank (red thing) the solid rocket boosters do all the work and use up the fuel in the fuel tank and then both the solid rocket boosters and the fuel tank fall off and are collect on earth and reused (there is a secondary fuel tank built in to the actual to take were it need to go once its in space)
No but if it is pointed straight up, it will take less fuel.
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