Advertisements
Advertisements
प्रश्न
What is wind? What precautions must be taken while placing a wind vane?
Advertisements
उत्तर
The wind is air in motion. A wind vane indicates the direction of the wind and consists of a rotating arm pivoted on a vertical rod. The arrow of the wind vane always points in the direction from which the wind blows and the wind is named accordingly. For example, if the pointer is pointing to the East, the wind is blowing from East to West and, therefore, this wind is called an easterly wind. Wind vanes are usually placed away from obstacles such as high buildings, trees, etc.
APPEARS IN
संबंधित प्रश्न
Write true or false. Correct the false statement.
The direction of wind blowing on the surface of the earth is affected by the Coriolis force.
Fill in the blanks
The pressure difference causes horizontal movement of air called _____ and vertical movement of air called ____.
Name the various forms of precipitation.
What are planetary winds?
What are the local winds? Give a few examples.
In your notebook, draw neat, labelled, coloured sketches of the three different types of rainfall. Alongside each diagram, briefly describe in your own words, how each type of rainfall occurs.
How are dewdrops beneficial for plants?
What is relative humidity? How does it differ from absolute humidity?
What does a large difference between the temperatures of a dry-bulb thermometer and a wet-bulb thermometer of a hygrometer indicate?
What are nimbus clouds?
