Final Answer:
1. Primary sources are original materials created at the time of an event or by someone who directly experienced it (e.g., letters, diaries, photos, artifacts, speeches).
2. An example is a diary entry written by a person who lived during the Ice Age or a tool made by early humans in the Americas.
3. When primary sources are hard to find, historians use secondary sources (like books or articles written by other historians) and look for indirect evidence (such as fossils, DNA, or archaeological findings).
4. Geologists, paleontologists, archaeologists, and anthropologists helped establish Pangea and study how early humans arrived in the Americas.
5. Learning about Pangea helps historians understand how Earth’s landmasses changed over time, which explains how plants, animals, and humans could migrate between continents.
6. The graphic illustrates how the Bering Land Bridge (ice-free corridor) connected Asia and North America during the Ice Age, allowing early humans to walk from Siberia into the Americas.
7. The best evidence Pangea existed is the way the continents fit together like puzzle pieces, plus matching fossil and rock types across now-separated continents (e.g., identical fossils in South America and Africa).
8. The evidence is that during the Ice Age, sea levels dropped, exposing the Bering Land Bridge—a dry land path between Siberia and Alaska—allowing people to walk from Asia into the Americas; similar stone tools and DNA links also support this.
Parent Tip: Review the logic above to help your child master the concept of pangaea worksheet.
