Weather

• What does weather refer to?

  Short-term atmospheric conditions
• What is the purpose of a weather forecast?

  To predict near-future weather conditions
• What are the main tools used in weather stations?

  • Anemometer: Measures wind speed
  • Aneroid Barometer: Measures atmospheric pressure
  • Maximum and Minimum Thermometer: Records daily temperatures
  • Wind Vane: Indicates wind direction
  • Rain Gauge: Measures precipitation
  • Campbell-Stokes Sunshine Recorder: Measures sunshine duration
  • Wet and Dry Bulb Thermometer: Measures humidity
  • Stevenson Screen: Shelters weather instruments
• What does an anemometer measure?

  Wind speed in km/h or knots
• What does an aneroid barometer measure?

  Atmospheric pressure in mb or hPa
• What does a maximum and minimum thermometer measure?

  Highest and lowest temperatures of the day
• What does a wind vane indicate?

  Direction of the wind
• What does a rain gauge measure?

  Amount of precipitation in mm
• How does a Campbell-Stokes sunshine recorder work?

  Uses a glass ball to burn marks on paper
• What does a wet and dry bulb thermometer measure?

  Humidity by comparing two temperatures
• What is the function of a Stevenson screen?

  Protects weather instruments from elements
• What are the types of lines used on weather maps?

  • Isotherms: Equal temperature areas
  • Isobars: Equal air pressure areas
  • Isohels: Equal sunshine hours areas
  • Isohyets: Equal rainfall areas
  • Isotachs: Equal wind speed areas
• What do isotherms represent on a weather map?

  Areas with equal temperature
• What do isobars indicate on a weather map?

  Areas with equal air pressure
• What do isohels show on a weather map?

  Areas with equal sunshine hours
• What do isohyets represent on a weather map?

  Areas with equal rainfall
• What do isotachs indicate on a weather map?

  Areas with equal wind speed