Storms - notes Name 1. A Per is a violent disturbance in the atmosphere. The 4 major types of storms are: , , , and A . is a scientist who studies weather and tries to predict it. 2. A is a small storm often accompanied by heavy precipitation and frequent and . These storms form in large cumulonimbus clouds on hot, humid afternoons. 3. Explain the movement of air in a thunderstorm. 4. is a sudden spark or electrical discharge. It is formed when and charges jump between parts of a cloud, between nearby clouds, or between a cloud and the ground. 5. Lightning heats the air to ⁰C. is the sound of the rapidly heated air expanding suddenly and explosively. Since light travels than sound, we see lightning we hear thunder. 6. What are the steps for Calculating Lightning Distance? 1. 2. 3. 7. Practice problem: How far away was the lightning strike? 8. Analyze the map. Which state has the most intense concentration of cloud-to-ground lightning? Why is this? 9. How to be safe during a thunderstorm: Go Do NOT touch anything that can conduct Crouch down in a ! (metal; water) (Avoid trees!) 10. A is a rapidly whirling, -shaped cloud that reaches down from a storm cloud and to touch Earth’s surface. 11. How does a tornado form? a. Warm, moist air flows in at the bottom of a cumulonimbus cloud and moves upward b. A pressure area forms inside the cloud c. _ air rotates as it meets winds blowing in different directions at different altitudes d. Part of the cloud descends to the earth in a 12. . is an area of the U.S. that has a high frequency of tornadoes because cold, dry air moves south from Canada to meet warm, humid air from the Gulf of Mexico. 13. Tornadoes are ranked on the They can range from an by the amount of damage they cause. (tree branches broken) to 14. The safest place to be during a tornado is in a storm shelter or the 15. A (massive destruction). of a well-built building. is a tropical cyclone that has winds of 119 km/hour or higher. When formed over the Pacific Ocean, these storms are called , . Hurricanes draw their energy from air at the ocean’s surface. 16. List 3 facts about Hurricane Names: 17. What does a hurricane need to begin to form (what provides the energy)? 18. How long do hurricanes often last? Why do hurricanes eventually stop? If possible, what is the safest thing for people to do during a hurricane? 19. In California, snowstorms generally only occur at 20. Name 2 dangers of being caught in a California snowstorm. .