Check your english vocabulary for

Other words and expressions you might find useful include:
Reflects / turns / starts / stops / records / turns up / turns down / winds / unwinds / revolves / folds / unfolds / reverses
Note: When we describe how an object works and there is no person or other agent involved in our description, we
use the active voice (‘Light enters the glass object and a small door opens up’), When there is a person involved in the
process, we usually use the passive voice (‘This can be released...’ ‘...a button is pressed’). This is because the action or
process is more important than the person doing it.