The weather factors and the importance of the weather prediction
What is the meaning of the weather ?
The weather is the expected conditions of the atmosphere at a certain area during a short period of time , not exceeding one week , Every day , You can know the weather news through the weather forecast .
The weather forecast includes the weather factors which are : The temperature , The winds , The atmospheric pressure , the clouds and the rain .
The temperature can be measured by the mercuric thermometer , and the digital thermometer .
The atmospheric pressure
The wind is the movement of the air from the regions of the high atmospheric pressure to the regions of the low atmospheric pressure .
The rise of the sea waves is caused by the wind speed . The wind direction is determined by the wind vane , and the wind speed is measured by the anemometer .
The clouds and the rain
When you look at the sky , You notice that the clouds increase in the coastal regions , and the sky is clear in the desert regions .
The clouds are formed when the water in the seas , the lakes and the oceans evaporates by the effect of the sun rays to form the water vapour . which rises in the sky , then it cooled and condensed to form the clouds .
The rain are formed when the clouds move by the effect of the winds , and the volume of the water drops in the clouds increases , then the air can not carry them , So the rains fall .
The importance of the weather prediction
People should follow the weather forecast as it gives them the prediction of the temperature , the pressure , the rain , the winds and the clouds .
People must wear the heavy clothes , when the weather forecast predicts that the temperature will be low .
If it predicts that the wind will be strong and the sea waves will be high , So , the ships and the fishing boats should not sail during this time .
If it predicts that the morning is foggy , So , The car drivers should slow down to avoid the accidents .
If it predicts that the rains will fall , So , People must wear the raincoats and use the umbrellas . and the farmers should know the best time for the irrigation .