Fins provide stability to rockets and help them to face the right direction, maintain a straight trajectory and not spin uncontrollably. The fins make the rocket much more aerodynamic, allowing for smoother motion throug... More » Science Physics Motion & Mechanics

Model rockets use a rocket motor for thrust, fins on the body for stability and a recovery system to bring the rocket back to the ground at safe speeds. A simple model may feature only a single stage, while more complex ... More » Hobbies & Games Toys

Simply put, rockets overcome the pull of gravity by moving very fast relative to the Earth. Although it is not strictly possible to entirely escape the gravitational pull of the Earth, as gravity propagates outward at th... More » Science Physics Motion & Mechanics
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One interesting rocket fact for kids is that the first rockets were used and launched in China during the Sung Dynasty from A.D. 960 to 1279. The first rocket to ever reach and cross the boundary of space, 100 kilometers... More » Science Chemistry

A water rocket works because of air pressure that is builds inside a container filled with water, usually a plastic soda bottle, which is released rapidly through an opening as it tries to escape. The reaction of a water... More » Science Physics Motion & Mechanics

Without friction, the best way to move would be with rocket propulsion. If there are solid objects on this frictionless surface, it would also be possible to move by pushing off of them. More » Science Physics Motion & Mechanics

Thrust is the force that propels a rocket up into space. It is measured in Newton’s, pounds or kilograms, and it is essentially the result of pressure that is exerted on the wall of the combustion chamber. More » Science Physics Motion & Mechanics