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