Answer:
If you partially block the stream of water coming out of a hose, the stream of water would shoot farther then before. This is because of the opening area of nozzle. The pressure of the water forces the stream to shoot out as it rushes through the small opening. Because of this, the water can shoot farther then before. This is why a nozzle would make a rocket more effcient as the rocket would be able to fly farther distances.
