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.
Forwards is only used as an adverb. 2. 'look forward to'. If you are looking forward to something that is going to happen, you want it to happen because you think you will enjoy it. He's looking forward to going home. 3. 'forward' used as an adjective. Forward is also an adjective. A forward movement is one in which someone or something moves forwards. Slow forward movement was made possible by pivoting his body with his shoulders. He points out that flapping wings provide forward thrust as well as upward lift.