Test: Unit 7 - Ballistics Spring 2025 To get a known bullet for comparison investigators test-fire the weapon into: wood block a water tank or gel block. soil. none of these choices.

## Step 1<br />This problem is related to the field of forensic ballistics, which is a branch of forensic science that deals with the study of projectiles and their behavior. The question is asking about the method investigators use to test-fire a weapon for comparison with a known bullet.<br />## Step 2<br />The options provided are: a wood block, a water tank or gel block, soil, and none of these choices.<br />## Step 3<br />The correct answer is a water tank or gel block. This is because when a bullet is fired into a water tank or gel block, it slows down and stops, allowing investigators to recover the bullet intact. This is crucial for comparison with a known bullet.<br />## Step 4<br />Firing a bullet into a wood block or soil would not yield the same results. The bullet would either get embedded or be destroyed, making it impossible to recover and compare with a known bullet.