Across
- 1. The force that keeps all things on earth
- 2. When a place has the same weather for a few months
- 3. The gravitational force
- 4. A flowing mass of ice that forms near the north and south pole
- 6. Fossil A fossil used to tell when other fossils are from
- 8. The conditions in a (temperature, perception, wind, etc) location
- 10. When there are no living members of a species
- 12. The remains of ancient plants and animals that are preserved
- 13. Dating The comparison of fossils and rocks to tell how old they are
Down
- 1. Till The eroded sediment that is dropped as glaciers expand and retreat
- 5. Core A cylinder of ice that is used to study layers in a glacier
- 6. Age When the global climate is colder for a long period of time
- 7. Cycle The circulation of water through the hydrosphere
- 9. Record All the fossils that have ever been found
- 11. The Average weather in a place for 30 years or longer