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Transcript
Name _________________________
Homeroom_____
Forecasting the Weather Web Quest Worksheet
Introduction: How do meteorologists forecast the weather? In this web quest, we will explore air masses,
fronts, weather stations and weather forecasting.
Procedure: Follow the links for each question and write down your responses on the Forecasting the
Weather Worksheet.
(This web quest is adapted from the Web Quest written by Linda Ruiz McCall for the Earth2Class Project: http://www.Earth2Class.org.)
Begin at the following page, “The Online Guides: Meteorology”:
http://ww2010.atmos.uiuc.edu/%28Gh%29/guides/mtr/home.rxml
To navigate, use the arrow keys at the bottom of each page and/or follow the links in each question.
1. What is an air mass? http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/af/arms/home.rxml
2. Describe the temperature, moisture and air pressure associated with a Continental Polar air mass.
Where do they originate? http://ww2010.atmos.uiuc.edu/%28Gh%29/guides/mtr/af/arms/artc.rxml
3. Describe the temperature, moisture and air pressure associated with a Maritime Tropical air mass.
Where do they originate? http://ww2010.atmos.uiuc.edu/%28Gh%29/guides/mtr/af/arms/trp.rxml
4. Describe a high pressure center. What is another name for a center of high pressure?
http://ww2010.atmos.uiuc.edu/(Gh)/wwhlpr/anticyclone.rxml?hret=/guides/mtr/af/arms/artc.rxml
5. What is a cyclone? What direction do winds flow in cyclones in the Northern Hemisphere? In the
Southern Hemisphere?
http://ww2010.atmos.uiuc.edu/(Gh)/wwhlpr/cyclone.rxml?hret=/guides/mtr/af/arms/artc.rxml
6. Watch this animation on how winds flow around cyclones (pressure lows) and anticyclones (pressure
highs) in the Northern Hemisphere. Draw and describe what you observe below.
http://ww2010.atmos.uiuc.edu/(Gh)/wwhlpr/anticyclone_ani.rxml?hret=/guides/maps/sfc/temp/sfctmpslp.rxml
7. Individual surface weather stations use a standard format to report data. Review the weather
stations symbols for temperature, weather symbol, dew point, cloud cover, sea level pressure and wind.
http://ww2010.atmos.uiuc.edu/(Gh)/wwhlpr/sfcobs.rxml?hret=/guides/mtr/af/arms/trp.rxml
Draw and label the station symbol in this example.
8. What is the definition of a front? http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/af/frnts/home.rxml
9. What is a cold front? Describe the characteristics before, during and after a cold front below.
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/af/frnts/cfrnt/def.rxml
10. Watch the animation of a cold front and describe the type of precipitation associated with cold front
movement. http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/af/frnts/cfrnt/prcp.rxml
11. What is a warm front? Describe the characteristics before, during and after a warm front below.
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/af/frnts/wfrnt/def.rxml
12. Watch the animation of a warm front and describe the type of precipitation associated with a warm
front. http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/af/frnts/wfrnt/prcp.rxml
13. What factors lead to an increased probability (chance) of precipitation?
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/fcst/prcp/frnt.rxml
14. What is the importance of temperature in the formation of rain, freezing rain, sleet or snow?
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cld/prcp/zr/fcst/fcst.rxml
15. What is a “Supercell Storm”? What dangerous conditions may develop during supercell storms?
What wind and cloud conditions are prevalent in supercell storms?
http://ww2010.atmos.uiuc.edu/(Gh)/wwhlpr/supercell.rxml?hret=/guides/mtr/af/frnts/ofdef.rxml&prv=1
16. What is the “Jet Stream” and at what altitude is the jet stream measured?
http://ww2010.atmos.uiuc.edu/%28Gh%29/wwhlpr/jetstream.rxml?hret=/indexlist.rxml
17. Weather Forecasting
a. There are several different methods of weather forecasting. Why is it important to forecast the weather?
http://ww2010.atmos.uiuc.edu/%28Gh%29/guides/mtr/fcst/home.rxml
b. Describe the “trends” methods of weather forecasting. What factors does a meteorologist using the trends
method consider? http://ww2010.atmos.uiuc.edu/%28Gh%29/guides/mtr/fcst/mth/trnd.rxml
c.
If a line of thunderstorms is located 60 miles to your northwest and moving southeast at 30 miles per
hour, how long will it take to reach your location? Show your calculation.
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/fcst/mth/trnd.rxml
18. Go to the following web site: http://www.nws.noaa.gov/om/windchill/
a. Calculate the wind chill factor when the temperature is 35° F and the wind speed is 12 mph.
Wind Chill Temperature:
b. Calculate the wind chill factor using today’s temperature and wind speed.
Wind Chill Temperature:
19. List two things you learned and one think you would like to learn about forecasting weather.