Massive Storms! 8.10C Identify the role of the oceans in the formation of weather systems such as hurricanes

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1 Massive Storms! 8.10C Identify the role of the oceans in the formation of weather systems such as hurricanes

2 Instructional page:

3 Each person in group will take on one portion or set of questions: Each person will complete some part of the research The group divides the research and tasks evenly, 2 people per group Use the research links provided on the teacher s website to get started Use google doc to collect information, or you can put information straight onto a slide Collaborate with your other group members and create a presentation with all of your collected information.

4 A method to the madness: You can make each question a slide in the presentation You can also divide the question/slides by people and then put all of the slides together into one presentation This information will be what you use to learn about hurricanes (in addition to resources on teacher s website) Each class will make one complete presentation about hurricanes All 3 class s power points will be posted in the review section of teacher s website

5 Example (fake) question and answer: What causes tornadoes to form? Not a good answer: Tornadoes are formed by thunderstorms.

6 Better answer: Most tornadoes form from thunderstorms. You need warm, moist air from the Gulf of Mexico and cool, dry air from Canada. When these two air masses meet, they create instability in the atmosphere. A change in wind direction and an increase in wind speed with increasing height creates an invisible, horizontal spinning effect in the lower atmosphere. Rising air within the updraft tilts the rotating air from horizontal to vertical. An area of rotation, 2-6 miles wide, now extends through much of the storm. Most strong and violent tornadoes form within this area of strong rotation.

7 Making the presentation: How to make a google presentation: Make a mind map with google drawing: Make a flow chart with google drawing: How to use google drawing:

8 Here are your tasks: The group divides the question and tasks evenly Each person will complete some part of the research Use the research links provided on the teacher s website to get started Use an individual google doc to collect information Collaborate with your partner and create a presentation with all of your collected information. Keep in mind the artistry of presenting information clean slides, no garish colors and ACCURATE information!

9 Hurricanes

11 What a Hurricane Needs to Develop

12 Warm tropical water - at least 80 F High Humidity Light wind Low Pressure Area Form between 5 and 20 latitude Hurricane Ingredients

rises in the atmosphere, leaving less air near the

13 Hurricane Formation As water evaporates from warm ocean waters this warm, moist air (less dense) rises in the atmosphere, leaving less air near the surface, and forming a low pressure area Hurricane Formation

surface will get stronger and it will spin faster,

14 Hurricane Formation As more ocean water evaporates and fuels the hurricane, the low pressure at the surface will get stronger and it will spin faster, leading to higher sustained wind speeds How Hurricanes Form

15 Inside the Hurricane

16 Hurricanes need warm water to form so they form near the equator, but not on it. Why?

17 Hurricanes turn to the right away from the equator because of the Coriolis Effect caused by Earth s rotation.

18 Hurricanes, typhoons and cyclones oh my! Hurricanes, cyclones, and typhoons are all the same weather phenomenon; we just use different names for these storms in different places. Called a Hurricane in the Atlantic and Northeast Pacific Typhoon in the Northwest Pacific Cyclones occur in the South Pacific and Indian Ocean. If the right conditions persist long enough, violent winds, incredible waves, torrential rains, and floods are created.

19 When hurricanes reach land:

20 Hurricanes weaken as they move over land They lose their source of heat and moisture Friction over land also reduces the circulation of surface winds, weakening a hurricane Hurricane Weakening

21 Famous Hurricanes Off the Texas coast Galveston: 1900 Known as "the Galveston Hurricane," the deadliest hurricane disaster in U.S. history occurred on September 8. More than 8,000 people died More than half of all the homes and buildings were destroyed.

23 Monsoons Monsoons are seasonal shifts in the prevailing wind direction, that usually brings with it a different kind of weather. It almost always refers to the Asian monsoon, a large region extending from India to Southeast Asia

24 Monsoons blow from the land toward the sea in winter, and from the sea toward land in the summer Runs from June to September Intense period of heavy rain, booming thunder, and plenty of lightening Monsoon Animation

26 El Niño

27 Abnormally high surface ocean temperatures off the coast of South America Causes unusual weather patterns across the globe Occur every 2 7 years

28 El Nino Starts because the easterly trade winds weaken and allow the warm waters in the Western Pacific to move east toward South America

29 El Nino This changes where the convection current occurs Causing rain where it usually doesn't occur and drought where it usually rains

30 La Nina After the El Nino phase, the La Nina follows Abnormally Low surface ocean temperatures off the coast of South America Causes unusual weather patterns across the globe

32 EL NINO Weaker Trade Winds warm water spreads out Equal condensation & precipitation throughout Compared to Normal, there is LESS precipitation near Asia and MORE by the Americas Animation NORMAL/LA NINA Strong Trade Winds More warm water near Asia more condensation more precipitation

33 El Nino and La Nina Explained Watch video: vity/the-ocean-and-weather-el-nino-and-la-nina/?ar_a=1

What a Hurricane Needs to Develop

Massive Storms! Hurricanes What a Hurricane Needs to Develop Warm tropical water - at least 80 F High Humidity Light wind Low Pressure Area Form between 5 and 20 latitude Hurricane Ingredients Hurricane