Across
- 2. Seasonal wind bringing heavy rain
- 3. Slow-moving river of ice
- 6. Physical features of land
- 8. Plates that make up Earth's crust
- 11. Frozen treeless biome
- 13. Land surrounded by water on three sides
- 14. Ocean between Americas and Europe
- 15. Vast treeless grassland plain
- 16. Frozen ocean at the North Pole
- 19. Land completely surrounded by water
- 21. Imaginary line at zero degrees latitude
Down
- 1. Mountain that erupts lava
- 4. Narrow sea inlet between cliffs
- 5. Lines measuring north-south position
- 6. Warm zone near the equator
- 7. Narrow water passage between lands
- 9. Low area of land drained by a river
- 10. Land formed at a river mouth
- 12. Longest river in Africa
- 17. Deep valley with steep sides
- 18. Giant ocean wave caused by earthquake
- 20. Largest hot desert in the world