Across
- 2. Type of plant that keeps its leaves in cold
- 5. Fast-moving mass of snow
- 9. Floating chunk of ice
- 11. Ice flakes
- 13. Star used for navigation in Earth's northen hemisphere
- 15. The "northern" in "northern lights"
Down
- 1. Period of dormancy exhibited by cold-blooded animals
- 3. Frozen moon of Saturn
- 4. Permanently frozen subsurface layer of soil
- 6. Lumps of ice that fall from clouds
- 7. Flightless southern bird
- 8. Northernmost part of the globe
- 10. State of reduced activity & metabolism alternative to hibernation
- 12. Slow-moving ice on land
- 14. Coldest city in the world