Final answer:
When you snap a stick between your hands, breaking it into two pieces, you have caused brittle deformation.
Step-by-step explanation:
When you snap a stick between your hands, breaking it into two pieces, you have caused brittle deformation.
Deformation is the change in shape of an object due to the application of a force. In this case, the force applied by your hands causes the stick to break into two pieces, resulting in brittle deformation.
Brittle deformation occurs when an object fractures or breaks without undergoing significant plastic deformation. This is different from ductile deformation, where the object undergoes plastic deformation before breaking.