1. In which year did Hurricane Katrina destroy New Orleans?
2. What percentage of people who are killed by lightning every year are male?
3. Which of these countries have had the most tornadoes in the last 20 years?
4. Which country was hit by the world's biggest earthquake in 1960?
5. Which country has got the largest number of active volcanoes in the world?
6. What percent of the Earth's surface is covered by water?
