How do you turn off a nozzle?

To turn off a nozzle, typically found on a hose or spray bottle, you should rotate the nozzle or lever to the "off" position, which is usually indicated by a specific marking. If it's a trigger nozzle, simply release the trigger to stop the flow of liquid. For garden hoses, you may also close the water valve at the source for a complete shut-off. Always ensure that the nozzle is properly turned off to prevent leaks.