Video explanation
Ignition on the pad leads into an exploded view of Merlin engines, first-stage tanks, interstage, second stage and payload fairing, connecting the rocket’s shape with the job of each section.
Engines generate thrust
Merlin burns kerosene and liquid oxygen; exhaust accelerated through the nozzle produces reaction thrust.
Staging reduces carried mass
After the first stage separates, the second continues propulsion without carrying the spent stage to orbit.
Fairing protects the payload
The fairing protects the payload in the dense atmosphere and is later released. The exploded view is a structural illustration.