global warming definition. The term attached to the notion that the Earth's temperature is increasing due to the greenhouse effect. Note: Whether global warming is actually happening is a subject of scientific debate.
Like jet airplanes, space rockets work on a principle called action and reaction (another name for Newton's third law of motion). The massive force (action) generated by hot gases firing backward from a rocket's engines produces an equal force (reaction) that pushes the rocket forward through space.
common answer is that the engine makes the car go forward but, it is the engine that makes the wheels go around but if the tires are on slick ice or deep mud, they just spin. Friction is also needed. On firm ground, the tires push backwards against the ground because of friction.