1. What is the term for the glacial area where snow and ice loss is greater than gainablation zone or talus?
2. What term best describes a coastal area below sea level that is kept dry by use of embankments such as dikes — steppe or polder?
3. What is the term for a stream with a network of interconnected channels — braided or dendritic?
4. What is the term for an isolated hill with a flat top and steeply sloped sides all around — butte or cuesta?
5. What is the term for the elevation boundary above which trees will no longer grow — timber line or isotherm?
6. What is the name for a wave formed from a rising tide moving upstream into a narrow inlet or channel — tidal bore or red tide?
7. Which of the following features is always formed by the faulting of Earth’s crust — rift valley or canyon?
8. What is the term for an ampitheater-like basin of glacial origin, typically found in mountain valleys — cape or cirque?
9. What is the term used for warm, dry winds that blow down the eastern slopes of the Rocky Mountains, typically leading to rapid temperature increases — chinook or gale?
10. Which term best describes an area in a stream that is more shallow than the surrounding channel due to increased sedimentary deposits — oxbow or riffle?
ANSWERS: 1. Ablation zone 2. Polder 3. Braided 4. Butte 5. Timber line 6. Tidal bore 7. Rift valley 8. Cirque 9.Chinook10. Riffle
National Geographic Bee, National Geographic Society
