# NIOS Class 12 Geography Chapter 12 Humidity And Precipitation

NIOS Class 12 Geography Chapter 12 Humidity And Precipitation, Solutions to each chapter is provided in the list so that you can easily browse throughout different chapters NIOS Class 12 Geography Chapter 12 Humidity And Precipitation and select need one. NIOS Class 12 Geography Chapter 12 Humidity And Precipitation Question Answers Download PDF. NIOS Study Material of Class 12 Geography Notes Paper 316.

## NIOS Class 12 Geography Chapter 12 Humidity And Precipitation

Also, you can read the NIOS book online in these sections Solutions by Expert Teachers as per National Institute of Open Schooling (NIOS) Book guidelines. These solutions are part of NIOS All Subject Solutions. Here we have given NIOS Class 12 Geography Chapter 12 Humidity And Precipitation, NIOS Senior Secondary Course Geography Solutions for All Chapter, You can practice these here.

### Humidity And Precipitation

Chapter: 12

GEOGRAPHY

INTEXT QUESTION 12.1

Q.1. Name the three forms in which water can exist in the atmosphere.

Ans. (a) liquid.

(b) solid.

(c) gaseous.

Q.2. Give a geographical term for each of the following:

(a) The amount of water vapour present in the atmosphere.

Ans. Humidity.

(b) The weight of actual water vapour present per volume of air.

Ans. Absolute humidity.

(c) The ratio of the amount of water vapour actually is a volume occupied by air to the amount the space could contain of saturation.

Ans. Relative humidity.

(d) The air that contains moisture to its full capacity is called.

Ans. Saturated air.

(e) The temperature at which a sample of air becomes saturated.

Ans. Dew point.

INTEXT QUESTIONS 12.2

Q.1. List five factors which affect the rate of evaporation.

Ans. (a) Temperature.

(b) Air moisture.

(c) Winds.

(d) Clouds.

(e) Accessibility of water bodies.

Q.2. Name the forms of condensation that take place on the solid objects.

Ans. (a) Dew.

(b) Frost.

Q.3. Name two forms of condensation that occur in the air just above the ground in the most parts of the world.

Ans. (a) Most.

(b) Fog.

Q.4. Give geographical term for each of the following:

(a) The process of change of water into water vapour.

Ans. Evaporation.

(b) The process of change of water vapour into liquid or solid state.

Ans. Condensation.

(c) A mass of tiny droplets of water or ice crystals hanging in the air at some height.

Ans. Cloud.

(d) Type of clouds formed due to convection and look like wool pack.

Ans. Cumulus.

(e) Type of clouds which are chief rain producer.

Ans. Cumulonimbus.

INTEXT QUESTIONS 12.3

Q.1. List the various forms of precipitation.

Ans. Drizzle, rainfall, sleet and hail.

Q.2. Name three types of rainfall.

Ans. (a) Convectional.

(b) Orographic and

(c) Cyclonic.

Q.3. Give one term for each of the following:

(a) Throwing down of atmospheric moisture of the earth’s surface.

Ans. Precipitation.

(b) Frozen raindrops and melted snow falling on the earth’s surface.

Ans. Sleet.

(c) The plane of contact between two air masses of varying characteristics.

Ans. Front.

(d) Precipitation in the form  of ice balls.

Ans. Hail.

(e) Rainfall caused by uplift of the air due to excessive heating.

Ans. Convectional rainfall.

Q.4. Below are given true and false statements. Mark ‘T’ of the statement is true and ‘F’ if statement is false:

(a) Precipitation is the process of converting water vapour into liquid or solid state.

Ans. False.

(b) Precipitation in the form of ice flakes is called snowfall.

Ans. True.

(c) Area lying on the leeward side of a mountain range receive scanty rainfall.

Ans. True.

(d) Orographic rainfall is caused by ascend of warm moist air due to excessive heating.

Ans. False.

INTEXT QUESTIONS 12.4

Q.1. Name any two regions of heavy precipitation.

Ans. Equatorial, eastern subtropical and western coastal temperate regions.

Q.2. Name any two regions of scanty precipitation.

Ans. Western margins along tropics and interior parts of continents in temperate zone and polar regions.

Q.3. Name the regions where precipitation is heavy throughout the year.

Ans. Equatorial regions.

Q.4. Name the regions which receive precipitation only in winters.

Ans. Mediterranean regions.

Q.5. Name given factors affecting rainfall distribution in the world.

Ans. (a) Moisture supply.

(b) Wind direction.

(c) Ocean currents.

(d) Presence of mountains.

(e) Pressure belts.

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