Which answer choice BEST supports the idea that rocket launches produce a lot of energy? A
The main engines are called liquid engines because the fuel is liquid hydrogen while liquid
oxygen is the oxidizer.
B
Hydrogen, the fuel for the main engines, is the lightest element and normally exists as a gas.
Gases like hydrogen are low-density, which means a little of it takes up a lot of space.
С
This reaction releases massive amounts of superheated water, or steam. It also generates a
tremendous amount of heat.
The propellant has the highest specific impulse of any commonly used rocket fuel.
Additionally, the incredibly efficient engines get great gas mileage out of an already efficient
fuel.