Across
- 5. a line marked off with a series of events and dates
- 6. based on movements of the Earth, moon, stars or a combination; people use them to measure the passage of time
- 7. the length of a timeline takes place
Down
- 1. a list of events in the order they occurred
- 2. a length of time singled out because of a specific event that happened during that time
- 3. people who study events in the past
- 4. one specific part in a timeline
- 8. the time before humans invented writing