Bellwork 5/5 Today we are going to learn about Hurricanes. . . BUT, we are going to head into our final unit on Climate next week. What are you curious to know about climate? What would you like to learn about? COME UP WITH SOMETHING!!!

Hurricanes! Most violent storms on Earth To be called a hurricane Wind speed in excess of 119 kilometers (74 miles) per hour Rotary cyclonic circulation Profile Form between the latitudes of 5 degrees and 20 degrees Known as: Typhoons in the western Pacific Cyclones in the Indian Ocean

Hurricane Names: Named by ocean basin A-Z Male/Female

Anatomy of a Hurricane Eyewall Eye Wall of cumulonimbus clouds Greatest wind speeds Heaviest rainfall Most dangerous part of the storm Eye At the very center About 20 km (12.5 miles) diameter Precipitation ceases Winds subsides Air gradually descends and heats by compression Warmest part of the storm

Heat Engine a device that produces motive power from heat, such as a gasoline engine or steam engine.

Hurricane Formation Form in all tropical waters except the South Atlantic and Eastern South Pacific Energy comes from condensing water vapor Develop most often in late summer when warm water temperatures provide energy and moisture Most form as clusters of thunderstorms Initial stage is not well understood Tropical depression – winds do not exceed 61 kilometers (38 miles) per hour Tropical storm – winds between 61 to 119 km (38 and 74 miles) per hour

Hurricane Decay Diminish in intensity whenever They move over cooler ocean water They move onto land The large-scale flow aloft is unfavorable

Formation of a Hurricane How is Global Circulation of Winds involved? How does moisture in the atmosphere have an effect? Why does a hurricane carry so much precipitation? How does ocean surface temperature play a role? How can ocean surface temperature change?