science pbl class 7 meteorological department

science pbl class 7

1. HOW READY ARE WE

2. ANNEXURE 2 1. Tornadoes warm, humid air ,rain,hail 2. Cyclone wind ,rain,high humidity 3. Landslides mass of rock, dust 4. Volcanoes ash,hot magma or lava,gases,rock pieces 5. Hailstrom raindrops,ice,wind

3. how indian metreological department prepares its forcasts The Meteorological Department mainly deals with the weather forecast. 1. Weather stations around the world make daily measurements of temperatures, rainfall, wind speeds and directions, air pressures and other weather features with various instruments. 2. The Meteorological Department prepares a weather report in which all the weather information is plotted on the maps. 3. Using these maps, weather forecasters predict the weather reasonably accurately which is then transmitted on the radio and television. Different instruments that are used by meteorologists are thermometers, anemometers, and barometer for measuring temperatures, wind speed, and air pressure respectively.

4. Fasinating facts about destructive winds Cyclone Nearer the eye of the cyclone, winds may hit a speed of 320 kmh A typical hurricane can dump 6 inches to a foot of rain across a region A forecaster from Australia named C.Wragge gave the name hurricanes in 1900. Tornado The word "tornado" is an altered form of the Spanish word tronada, which means "thunderstorm". This in turn was taken from the Latin tonare, meaning "to thunder". In the United States, tornadoes are around 500 feet (150 m) across on average and travel on the ground for 5 miles (8.0 km) Most tornadoes occur in Tornado Alley