What is Weather Investigation 1 Part 2 Weather
- Slides: 13
What is Weather? Investigation 1: Part 2
Weather is the condition of Earth’s atmosphere at any given time in a given place.
Write a weather report: a brief description of the current weather.
Components of Weather • What types of information are included in your weather report or forecast? • Temperature • Humidity • Wind Speed • Wind Direction ∙ Cloud Cover ∙ Predictions for future weather ∙ Visibility ∙ Air Pressure
Professional Reports Temperature Forecast Cloud conditions Pressure Humidity Visibility Wind Speed Direction
Weather Reports & Forecasts • • • www. weather. com www. NOAA. gov www. Accu. Weather. com http: //www. wunderground. com/ http: //www. intellicast. com/ http: //weather. cnn. com/weather/forecast. jsp
Weather Vocabulary • Temperature - how hot or cold the air is • Humidity - the amount of water vapor in the air • Wind- the movement of air from a location of high pressure to area of low pressure so pressure equalizes • Wind Direction - the direction from which the wind is coming • Wind Speed - how fast the air is moving past a measuring point • Pressure- the force of air pushing in all directions • Visibility- the distance one can see through the
Compass- used to determine the direction from which wind is coming Barometer – measures air pressure Wind vane measures wind direction Thermometer - measures temperature Anemometer - measures wind speed Hygrometer measures humidity
Visibility • Is how far you can see (maximum is 7 miles or 11 km) • Weather factors that might limit visibility… Fog, clouds, haze, smog, rain, snow, dust • Determine visibility? – View distant landmarks (mountains, towers, buildings, etc)
Class Weather Chart What might be included in “Other Observations? Clouds Precipitation Color/Shade of sky
Time to Go Outside • • • Practice using tools For scientific investigation, not recreation Readings always made in same location Each group work with all tools Anemometer and compass used together
Units for Measurements _____ is measured in ____ • Temperature - degrees Fahrenheit ˚F or Celsius ˚C • • Pressure - millibars (mb) Humidity - percent % Wind speed - mph or km/h (miles per hour) Wind direction - the direction the wind is coming from (N, S, E, W)
Record the Weather Observations • Turn to the Class Weather Chart page in Inv 1 Record the data on your weather chart