| A | B |
| primary evidence | evidence that was produced at the time of an event |
| secondary evidence | evidence that was produced after the time of an event |
| bias | preferring one way of looking at an event to another |
| BC | A term describing events that happened before Jesus was born |
| AD | A term describing events that happened after Jesus was born |
| chronology | the study of time |
| interpretation | a word meaning 'your own understanding' of an event |
| decade | a word used to describe a ten year period |
| century | a word used to describe a hundred year period |
| millenium | a word used to describe a thousand year period |
| cause | something that makes something else happen is called a ... |
| consequence | the result of a cause is called a ... |
| anachronism | when something belongs to another time it is called an ... |
| artefact | a tool or ornament made by people and used by historians to tell us about other times |