4. Answer the following questions:
(a) Why is the air in a region dry?
(b) How is humidity measured?
(C) What
the prerequisites for
condensation?
(oby What is a cloud? Write its types.
@ Which type of clouds give rain?
N On what does the percentage of relative
humidity depend?
Answers
Answer:
Humidity can be measured using a variety of instruments. Relative humidity is often determined using a sling psychrometer or a hair hygrometer. A sling psychrometer is a device that consists of two thermometers joined to a piece of plastic or metal.
Answer:a.This is because of the high moisture content in the air due to evaporation from the sea. ... Thus the air in this region feels dry. Most of the moisture content of the air is lost by rain to other areas and thus summers tend to become very hot in these regions.
2.
Humidity is the measure of the amount of moisture in the air. A psychrometer is an example of a hygrometer. A psychrometer uses two thermometers to measure relative humidity; one measures the dry-bulb temperature and the other measures the wet-bulb temperature.
3.The condensation process. Condensation is the term for water changing state from a vapor to a liquid. The process requires the presence of water vapor in the atmosphere, falling temperature and the presence of another object for water vapor to condense around.
4.Clouds that produce rain and snow fall into this category. ("Nimbus" comes from the Latin word for "rain.") Two examples are the nimbostratus or cumulonimbus clouds. Nimbostratus clouds bring continuous precipitation that can last for many hours.
5.Relative humidity (RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature. Relative humidity depends on temperature and the pressure of the system of interest. The same amount of water vapor results in higher relative humidity in cool air than warm air.