1. The majority of strong earthquakes along the Ring of Fire occur due to which process — converging plates or island formation?
2. A salt flat forms when a water basin is subjected to which process — evaporation or coastal flooding?
3. Which type of vegetation is characterized by widely spaced trees and shrubs — coniferous forest or savanna grassland?
4. Mid-latitude cyclones, created when warmer air and colder air masses interact, are examples of which of the following — low pressure or air pollution?
5. Airborne pollutants at Earth’s surface can form a harmful version of which compound that is vital in blocking ultraviolet radiation in the upper atmosphere — sodium sulfate or ozone?
6. Which is more important in the formation of sand dunes — wind or vegetation?
7. Which condition is necessary to create fog — air saturation or proximity to mountains?
8. Which is the more important factor in the creation of a fjord — glacial erosion or rainfall totals?
9. A sea stack can form from which process — sea arch collapse or diverging plates?
10. Santa Ana winds, which are warm, down- slope winds in California, are often responsible for generating ideal conditions for which of the following — thunderstorms or wildfires?
ANSWERS 1. Converging plates 2. Evaporation 3. Savanna grassland 4. Low pressure 5. Ozone 6. Wind 7. Air saturation 8. Glacial erosion 9. Sea arch collapses 10. Wildfires
National Geographic Bee, National Geographic Society
