Weather

1. Weather

2. Introductory Journal • Storm chasers • How did the stormchaser know a tornado was forming? Use observations to explain. • List 2 benefits of using videography to capture extreme weather. • List 2 limitations of using videography to capture extreme weather.

3. Weather Forecasting: Meteorology Team • It is 1765. You are a scientist that has been asked by Laurent Lavoisier (first scientist to measure weather) to be a member of the first official meteorology team. • The team has been given the directions for how to make the following pieces of weather equipment: barometer, rain gauge, hygrometer, weather vane & anemometer. Your team’s assignment is to collect weather data for 5 days, keep a weather journal (observations & actual), and use this information to answer the following questions: • What patterns are there between the measurements collected when using the equipment and the weather? • How can future scientists use this equipment to predict the weather? • Were there any pieces of equipment that you would like to improve? If so, how would you improve them?

4. Meteorology Teams Team Name: ________________________________________________ Recorder: responsible for keeping weather journal (including actual) ____________________________________________________________ Analyst: responsible for making data tables & keeping data after each outing ____________________________________________________________ Manager: responsible for overseeing project & final meeting (answering questions) ___________________________________________________________ Writer: responsible for overseeing the creation of the final report to be submitted ___________________________________________________________

5. Meteorology Teams Team Name:________________________________________________ Recorder: responsible for keeping weather journal (including actual) ____________________________________________________ Analyst: responsible for making data tables & keeping data after each outing ________________________________________________ Engineers: responsible for organizing the construction of the equipment & ensuring readings (to complete readings if a member is absent) Member’s Assignments: Anemometer: ________________________________________________ Hygrometer: _________________________________________________ Barometer: __________________________________________________ Weather Vane: _______________________________________________ Rain Gauge: _________________________________________________ Manager: responsible for overseeing project & final meeting (answering questions) ________________________________________________ Writer: responsible for overseeing the creation of the final report to be submitted

6. Hydrosphere & Ocean Currents 13.8 – Hydrosphere 13.9 – Major Ocean Currents Please complete each of the following tasks to share with a partner during our next class: • Read and write summary notes • Create a visual (i.e. word web, flow chart, labeled diagram, etc.) that represents the main points discussed in your section • Write 3 original questions to ask you partner so that you can check her/his understanding of your summary & diagram

7. Global Wind Patterns

8. Ocean Currents • Currents are caused by: • Convection currents • Wind • Earth’s rotation • Heat capacity of water • Shapes of Continents • Salt in water

9. Ocean Currents

10. Energy & Condensation • Water, land & plants gain energy from sun & surroundings • Energy gain = faster water molecules • Faster water molecules = rising water vapour • At high altitude, temp. is colder & water vapour  liquid (condensation)

11. Energy & Condensation Clouds: • Fine droplets of water • Light • Carried by wind Cloud Formation: • Convective – moist air near ground rises & cools • Frontal – moving air masses meet; cold & warm • Orographic – warm, moist air moves up mountain & cools

12. Clouds

13. Condensation (p. 556): • Droplets accumulate & cool • Heavy, larger droplets = falling condensation (rain) • Types: • Drizzle – fine drops • Rain – larger drops • Freezing rain – cold rain hits cold surface • Snow – water vapour crystallizes on tiny solid particles (below 0˚C) • Hail – cumulonimbus clouds; frozen, layered drops

14. Condensation & Wind • Explain one thing that common about the causes of condesation and wind. Wind: • Moves in predictible pattern • Leads to movement of condensation • Creates predictable weather patterns (hurricane path)

15. Global Weather Model

16. Reflection – Weather Patterns • In your own words, describe severe weather. • Explain how condensation is formed. • Describe what wind is. • Explain how the absorption of the sun’s energy (heat) affects wind and precipitation.

17. Reflection – Weather Patterns • Outline the pattern of wind currents on the global scale. • Outline the pattern of ocean currents on the global scale. • Base on all that you have learned, what would you say is the main cause of extreme weather on Earth? Support your response with ideas learned during this unit.

18. Meterology Questions • What patterns are there between the measurements collected when using the equipment and the weather? • How can future scientists use this equipment to predict the weather? • Were there any pieces of equipment that you would like to improve? If so, how would you improve them?