NIOS:Home Science Dhruv Hadiya

A windmill is a structure that converts wind power into rotational energy by means of vanes called sails or blades, specifically to mill grain, but the term is also extended to windpumps, wind turbines and other applications. The term wind engine is sometimes used to describe such devices.

Study skills, academic skill, or study strategies are approaches applied to learning. They are generally critical to success in school, considered essential for acquiring good grades, and useful for learning throughout one's life.