Weather Maps and Weather Maps and SymbolsSymbols

Science 1206Science 1206

Lesson ObjectivesLesson Objectivesto understand how meteorological data is to understand how meteorological data is collected and how the data is used to predict collected and how the data is used to predict future weather conditions.future weather conditions.

to locate weather symbols typically used on to locate weather symbols typically used on weather maps which indicate the following weather maps which indicate the following weather conditions: weather conditions: high pressure region (indicated by high pressure region (indicated by H); low pressure region (indicated by L), wind direction and H); low pressure region (indicated by L), wind direction and speed and type of cloud cover, air temperature (speed and type of cloud cover, air temperature (°°C); C); visibility (the distance x100m that one can see); weather visibility (the distance x100m that one can see); weather condition (may include rain, freezing rain, snow, condition (may include rain, freezing rain, snow, thunderstorm, fog, haze, or dew); dew point (temperature thunderstorm, fog, haze, or dew); dew point (temperature at which moisture will condense on objects); type of low, at which moisture will condense on objects); type of low, middle, and high cloud cover and isobars (lines middle, and high cloud cover and isobars (lines representing regions with the same atmospheric pressure).representing regions with the same atmospheric pressure).

Predicting Future Weather Predicting Future Weather ConditionsConditions

Have you ever noticed how certain people who Have you ever noticed how certain people who work closely with the sea or land (fishing, work closely with the sea or land (fishing, logging, and farming) tend to be able to forecast logging, and farming) tend to be able to forecast the weather without the use of instruments. the weather without the use of instruments.

As technology advanced, people have been As technology advanced, people have been collecting weather data using simple instruments collecting weather data using simple instruments to quantify measurements of temperature, to quantify measurements of temperature, atmospheric pressure, relative humidity, wind atmospheric pressure, relative humidity, wind direction and speed.direction and speed.

The Weather Forecast The Weather Forecast

The study of weather and The study of weather and forecasting is called forecasting is called meteorologymeteorology. .

The people who study the The people who study the weather and try to predict weather and try to predict future trends are called future trends are called meteorologistsmeteorologists..

http://www.on.ec.gc.ca/greatlakeskids/glk-video-e.html

Weather MapWeather Map

Weather on the WebWeather on the Web

http://weatheroffice.ec.gc.ca/jet_stream/inhttp://weatheroffice.ec.gc.ca/jet_stream/index_e.htmldex_e.html

http://www.weathernetwork.com/weather/http://www.weathernetwork.com/weather/maps/floods.htm?tempmaps/floods.htm?temp

Professional Meteorological Professional Meteorological Weather Map Weather Map

ActivityActivityRead "Interpreting and Creating Weather Maps" on Pages 683-685. Using Read "Interpreting and Creating Weather Maps" on Pages 683-685. Using the map provided, compile a listing of symbols located on the map and the map provided, compile a listing of symbols located on the map and identify the meaning of each. Your list of symbols should include the identify the meaning of each. Your list of symbols should include the following:following:high pressure region (indicated by H) high pressure region (indicated by H) low pressure region (indicated by L) low pressure region (indicated by L) wind direction and speed and type of cloud cover wind direction and speed and type of cloud cover air temperature (air temperature (°°C) C) visibility (the distance x100m that one can see) visibility (the distance x100m that one can see) weather condition (may include rain, freezing rain, snow, thunderstorm, fog, weather condition (may include rain, freezing rain, snow, thunderstorm, fog, haze, or dew) haze, or dew) dew point (temperature at which moisture will condense on objects) dew point (temperature at which moisture will condense on objects) type of low, middle, and high cloud cover type of low, middle, and high cloud cover isobars (lines representing regions with the same atmospheric pressure) isobars (lines representing regions with the same atmospheric pressure) Select one area of the weather map and describe the weather conditions in Select one area of the weather map and describe the weather conditions in that locality. Write a complete report of your findings in your portfolio.that locality. Write a complete report of your findings in your portfolio.

Which symbol on a weather map indicates a Which symbol on a weather map indicates a

region of high pressure?region of high pressure?

a. La. Lb. Sb. Sc. Hc. Hd. 860 d. 860

Answer: C

Cloud cover is indicate by a circle. What Cloud cover is indicate by a circle. What does the following cloud cover symbol does the following cloud cover symbol mean?mean?

a. obscured skya. obscured skyb. cloudy skyb. cloudy skyc. partly cloudy skyc. partly cloudy skyd. scattered clouds d. scattered clouds

Answer : B

What type of cloud is indicated by the following cloud symbol?

a. cirrusa. cirrusb. cirrostratusb. cirrostratusc. cumulusc. cumulusd. cirrocumulus d. cirrocumulus

Answer : A

What type of weather condition is What type of weather condition is indicated by the following symbol?indicated by the following symbol?

a. raina. rainb. fogb. fogc. snowc. snowd. haze d. haze

Answer : C

What type of weather condition is What type of weather condition is represented by the following represented by the following

symbol? symbol?

a. rain a. rain b. tornadob. tornadoc. windyc. windyd. thunderstormd. thunderstorm

Answer: D

Which symbol refers to an increase Which symbol refers to an increase in barometric pressure? in barometric pressure?

a. La. Lb. Hb. Hc. +0.6c. +0.6d. 101.5 d. 101.5

Answer: C