Advertisements
Advertisements
प्रश्न
Suggest two methods to find out wind direction at a given place.
Advertisements
उत्तर १
The following are the two methods to find out the direction of wind.
1) While flying a kite, air exerts pressure on the kite due to which the kite flies. The direction in which the kite flies is the direction of blowing of wind.
2) While riding a bicycle, the direction in which it is difficult to ride is opposite to the direction of the blowing wind.
Therefore, while flying a kite or riding a bicycle, the wind direction at a given place can be determined.
उत्तर २
1) Take a piece of a paper in your hand. Allow it to fall from your hand. It will flow in the direction in which wind is blowing.
2) You can also use a wind-pane which helps us to know accurate wind direction.
APPEARS IN
संबंधित प्रश्न
Write the numerical value of the atmospheric pressure on the earth surface in pascal.
Give reason for the following :
Two holes are made in a sealed oil tin to take out oil from it.
Explain the following :
A balloon collapses when air is removed from it.
What is a barometer?
The normal atmospheric pressure is :
Atmospheric pressure at sea level is 76 cm of mercury. Calculate the vertical height of the air column exerting the above pressure. Assume the density of air 1.29 kgm−3 and that of mercury is 13600 kgm−3. Why the height calculated by you is far less than the actual height of the atmosphere?
What does a falling barometer indicate?
Give reason:
Air pressure decreases with increasing altitude.
Humans are sensitive even to a small variations in pressure.
Figure shows a child blowing air with a straw near the opening of another straw which has its other end in a soft drink bottle. It was observed that the level of the soft drink in the straw rises up as soon as air is blown over its open end. Which one of the following best explains the reason for rise in level of the drink?

