Across
- 2. Ground that remains frozen for a minimum of two consecutive years
- 6. Flat, rounded sea-ice pieces formed by wave action in cold waters
- 8. Area of open water surrounded by ice in polar regions
- 11. Sea ice that has grown no more than one winter season
- 16. German naturalist who pioneered modern physical geography and climate science
- 18. Physicist who proved that certain gases trap heat in the atmosphere
- 19. Rock and sediment carried and deposited by a glacier
- 20. Large, slow-moving mass of ice formed from compacted snow on land
Down
- 1. Swedish scientist who first quantified the warming effect of CO₂ in 1896
- 3. Section of a glacier where ice flows rapidly over steep terrain
- 4. Layered accumulation of snow that stores winter precipitation
- 5. Solid, ice-like compound where methane gas is trapped in water molecules
- 7. Ratio of reflected to incoming solar radiation from a surface
- 9. Process where chunks of ice break off from a glacier or iceberg front
- 10. Flat area formed by sediments deposited by melting glacial water
- 12. Triangular mass of ice formed in cracks within permafrost soil
- 13. Immense glacier covering a large landmass, such as Antarctica
- 14. A prolonged period of extreme global cooling and expanded glaciation
- 15. Process by which ice or snow is lost through melting, evaporation or wind
- 17. Situated or occurring within the body of a glacier