What causes blood to spatter?

Blood spatter is a term used to describe the pattern created when blood is expelled from the body and lands on a surface. It can occur when a person is injured or killed by a violent act, such as a gunshot or stabbing. Blood spatter can also be used to determine the direction and force of the impact that caused the blood to be expelled.

There are a number of factors that can affect the pattern of blood spatter, including:

* The type of weapon used. A sharp object, such as a knife or a bullet, will create a different pattern of blood spatter than a blunt object, such as a hammer.

* The force of the impact. The harder the object hits the body, the more blood will be expelled and the larger the area of blood spatter will be.

* The distance between the victim and the object. The farther away the victim is from the object, the smaller the area of blood spatter will be.

* The angle at which the object strikes the body. The angle at which the object strikes the body can affect the direction of the blood spatter.

Blood spatter analysis can be a valuable tool for crime scene investigators. It can help them to determine the location of the victim at the time of the attack, the direction of the attack, and the type of weapon that was used.