The document describes different simple machines: pulleys, screws, inclined planes, levers, wheels and axles, wedges, and compound machines. Pulleys are used in light switches and blinds to lift objects using a string or rope. Screws work by twisting motions. Inclined planes like sidewalks and ramps require less force than straight surfaces. Levers like brooms and screwdrivers pivot around a fulcrum. Wheels and axles connect circular wheels to rotating shafts or axles. Wedges like knives and forks force materials apart. Compound machines combine two or more simple machines, as seen in bicycles and cars.