| A | B |
|---|
| gust | sudden increase in wind velocity |
| evacuation | action taken as a devastating storm approaches |
| storm surge | unusually high rise in the level of the ocean during a hurricane |
| salinity | concentration of salt in the environment |
| typhoon | large violent strom originating in the Pacific Ocean |
| flash flood | sudden rise in a stream or river often causing severe damage to the surrounding country |
| pathogen | term for disease-causing bacteria or viruses |
| tetanus | deadly disease caused by bacteria in the soil |
| erosion | wearing away of soil or rock by natural forces such as wind and water |
| counterclockwise | describes the directions of a hurricane winds in the Northern Hemisphere |
| Altlantic Ocean hurricanes | originate in the warm tropical water west of Africa |
| low pressure area, warm ocean, energy from water vapor condensation, Earth's rotation | contribute to the formation of a hurricane |
| wind speed | force of wind hitting a building depends on this |
| spread of infectious disease, interruption of water supply, damage to crops | problems caused by hurricanes |
| provide water for plants and animals | benefit of storms |
| wind & water | most damage from hurricanes comes from this |
| as a hurricane approaches land this happens | transfers energy carried by winds to shallower water, creating huge waves |
| land cuts the hurrican off from its energy supply which is the warm ocean water | hurricane loses force and dies over land because of this |
| force of moving water increases as the speed increases | flooded rivers become very dangerous due to this |
| How do hurricanes damage undersea areas? | Changes in salinity or mineral content upset marine ecosystems; wind and waves can kill marine organisms, including coral, in shallow-water reef areas. |
| What sorts of damage can floods cause? | bridges washed out, erosion of levees and roads, buildings destroyed, crops lost, human deaths |
| Why is a storm surge more destructive in a narrow bay than on a flat coast? | In a bay, the surge is directed into a confined area and vents all its force there. |
| What threat does a hurricane pose to area far inland? | Smaller storms, such as tornadoes, can spin off and cause considerable damage. |
