ELI5: Explain Like I'm 5

Chopper (archaeology)

Imagine you are playing in a sandbox and you take a rock and hit it against another rock to try and break it into smaller pieces. That is kind of what a chopper is in archaeology.

A chopper is a type of tool that was used by ancient humans a long time ago. They would take a rock and use it to strike another rock at an angle, which would cause chunks of the rock to break off. This made a sharp edge that they could use for cutting and scraping things like animal hides or plant stems.

People used choppers a lot before they had metal tools like knives. They would make them from all different types of rocks that they found, depending on what was available where they lived. They would also make them in different shapes and sizes for different tasks.

Archaeologists can find choppers when they are digging up old sites where people used to live. They can tell how old the choppers are by looking at the layers of sediment (dirt and sand) that are around them. By studying these choppers, archaeologists have learned a lot about how early humans interacted with their environment and how they developed technology over time.
Related topics others have asked about: