| Term | Definition |
| Paleolithic Age | Old Stone Age: lasted from time of earliest stone tools to 10,000 years ago |
| Neolithic Age | New Stone Age : lasted only 5,000 years |
| prehistory | what happened before writing was invented |
| ice age | period of time when climate grows colder and ice covers large parts of Earth's surface |
| domesticated | tamed |
| prehistoric | before recorded history: ancient, primitive |
| Neandertals | earliest Ice Age humans |
| Cro-Magnons | direct ancestors of modern humans |
| Stone Age | Period of time: began 2.4 million years ago when ancestors to modern man began making tools |
| civilization | a group of people who have cities and a government |
| ancestors | blood relatives who came before you |
| homo sapiens | "thinking man" or modern humans |
| hominid | earliest humans who walked on two feet |