What causes blood to spatter?

Blood spatter is primarily caused by the force of impact or movement, which can occur during events like a violent act or a fall. When blood is expelled from a source, such as a wound or a container, it can break apart into droplets due to the energy of the force. The pattern and distribution of these droplets are influenced by factors such as the angle of impact, the speed of the blood, and the surface it lands on. Analyzing these patterns can provide information about the events that caused the blood spatter.