Question

A list of words is given in a box. Use appropriate words to fill up the blanks in the following statements.

[Air, oxygen, wind, water vapor, mixture, combination, direction, road, bottles, cylinders]

A weathercock shows the _______ in which the air is moving at that place.

Answer 1

Weather clock:

1. Weather clocks are timepieces that display the current temperature and weather conditions.
2. These sensors do not 'predict' weather; rather, they show the current status of the local weather in real-time.

Mechanism of a Weather Clock:

1. A tiny flexible, airtight metal box is housed within an aneroid barometer.
2. Since the air has been forced out of this box, even slight changes in external air pressure cause the box's metal to expand/contract.
3. The expansion and contraction movements cause the needle on the dial to move, representing the pressure change.
4. In a nutshell, high air pressure means a clear sky and dry, steady weather.
5. When the air pressure is low, the wind is swiftly cycled inwards and upwards.
6. As a result, the air rises and cools, and clouds develop, which may lead to rain.
7. Low air pressure causes unstable meteorological conditions such as rain or thunderstorms.

Thus, a weathercock shows the direction in which the air is moving at that place.