Across
- 6. a steep rock face, especially at the edge of the sea
- 8. an area of land surrounded by water on three sides
- 9. a slowly moving mass of ice formed by the accumulation and compaction of snow
- 11. naturally raised landform, smaller than a mountain
- 12. global ecosystem composed of living organisms
- 13. a piece of land surrounded by water
- 16. The envelope of gases surrounding the earth or another planet
- 18. Tallest landform
- 19. solid components of a planet such as Earth
- 20. liquid layer of Earth
Down
- 1. rigid outer part of Earth, consisting of the crust and upper mantle
- 2. lowest atmospheric level. Where most weather happens
- 3. Broad area of relatively flat land
- 4. Ozone layer. Where airplanes fly
- 5. Low area of land between mountains, typically with a river or stream
- 7. Mostly solid layer. 84% of Earth's volume
- 10. Outer-most layer that living organisms with which living organisms have contact
- 11. all the water on Earth's surface
- 14. a deep gorge, typically one with a river flowing through it
- 15. Solid metal center of the planet
- 17. Flat, elevated area of land. Rises sharply above the surrounding land