Spear
device · 400000 BC · Stone Age
A shaft with a sharp point.
What it is made of
- Stone tool — has part. Early spearheads were made of stone.
Principles and materials it uses
- Wood — is made of. The shaft of a spear is wooden.
Where it is used
- Spear-thrower — is used in. It throws darts.
History: what it evolved from and what it influenced
- Harpoon — evolved into. A spear with barbs.
- Fire lance — evolved into. The fire lance was a spear with a tube of gunpowder — the first step to firearms.