Across
- 5. Wetland with stagnant water and thick vegetation
- 6. Flat-topped hill with steep sides
- 10. Group of islands
- 12. Solid, natural substance made of minerals
- 13. Large volcanic crater
- 14. Large body of ice that moves slowly downhill
- 15. Small, rounded hill
- 17. Large floating mass of ice
- 19. Imaginary line around the Earth's middle
Down
- 1. Large, flat area of land
- 2. Land mass surrounded by water
- 3. Sandy or pebbly shore along a body of water
- 4. Fertile area in a desert with water and vegetation
- 7. Landform at the mouth of a river where it meets the sea
- 8. Shallow body of water separated from the sea by a barrier
- 9. Natural underground chamber
- 11. Fracture in the Earth's crust
- 12. Group of mountains
- 16. Elevated land with a rounded summit
- 18. Marshy body of water found in the southern US