Do all sprinklers go off if one goes off?

Do all sprinklers go off if one goes off depends on whether you mean lawn irrigation sprinklers or fire sprinklers. For lawn irrigation system, no, all sprinklers do not go off if one goes off, because system is divided into zones controlled by valves and timer, so only zone that is scheduled will run, and if one head breaks, others in same zone may still run but with low pressure. Each zone operates independently, so activation of one zone does not trigger all zones. For fire sprinkler system in building, no, all sprinklers do not go off if one goes off, as fire sprinklers are individually heat activated, only sprinkler closest to fire with heat reaching activation temperature, typically 155 to 165 Fahrenheit, will activate and spray water, while others remain closed. This is movie myth that all go off at once, but real fire systems activate only where needed to minimize water damage. Only deluge systems used in high hazard areas activate all at once. So for both lawn and fire systems, all sprinklers do not go off if one goes off, they operate independently or by zone.