Electric motor Ex:we used and electric motor to power a battery Def:An electric motor is an electric machine that converts electrical energy into mechanical energy. In normal motoring mode, most electric motors operate through the interaction between an electric motor's magnetic field and winding currents to generate force within the motor.
Joule Ex: we used a new way to measure things in science, it's called a joule Def: the Unit of work or energy, equal to the work done by a force of one newton.
Magnetic pole Ex: we learned what a magnetic pole was today! Def:each of the two points of an artificial or natural magnet to and from which the lines of magnetic force are directed.
Photosynthesis Ex: the flower expanded for sun Def: the process by which plants and some other organisms use sunlight to make foods from carbon dioxide and water.