How does a rocket blast off?

Rockets must escape the Earth's gravity, which is the force that pulls things towards the Earth. To accomplish so, they must produce a massive quantity of thrust - the power that propels the rocket higher. Rockets transport a lot of fuel. This fuel burns slowly and produces a lot of heat. When rocket fuel burns, gas is produced. The gas buildup departs the rocket with great power, providing enough thrust for the rocket to take flight. The rocket must carry a large amount of fuel in numerous tanks in order to maintain enough thrust to overcome Earth's gravity. When a tank of fuel is depleted, the fuel tank is detached from the rocket, making it significantly lighter.

Because a rocket requires power to escape Earth's gravity, the explosive chemical reaction occurs in a restricted chamber and discharges gases via a cone-shaped nozzle at the rocket's tail end. The cone form accelerates the gases, which may travel up to 9,941 miles (15,998 kilometers) per hour.