Across
- 1. A first-hand source, such as a photo.
- 3. Rock
- 5. A non-first-hand source, such as a textbook.
- 7. An object made by humans, often of historical or cultural relevance.
- 8. Old Stone Age
- 9. New Stone Age
Down
- 1. A period of time before written records
- 2. Middle Stone Age
- 4. A conclusion reached through evidence and logic.
- 6. A yellow-brown metal made of copper and tin
- 10. A strong, silver-grey metal