{"id":3976,"date":"2020-08-30T09:32:09","date_gmt":"2020-08-30T04:02:09","guid":{"rendered":"https:\/\/kseebsolutions.guru\/?p=3976"},"modified":"2021-07-02T15:04:05","modified_gmt":"2021-07-02T09:34:05","slug":"kseeb-solutions-class-8-geography-chapter-3","status":"publish","type":"post","link":"https:\/\/kseebsolutions.guru\/kseeb-solutions-class-8-geography-chapter-3\/","title":{"rendered":"KSEEB Solutions for Class 8 Geography Chapter 3 Atmosphere"},"content":{"rendered":"

Students can Download Geography Chapter 3 Atmosphere Questions and Answers, Notes, KSEEB Solutions for Class 8 Social Science<\/a>\u00a0helps you to revise complete Karnataka State Board Syllabus and score more marks in your examinations.<\/p>\n

Karnataka State Syllabus Class 8 Social Science Geography Chapter 3 Atmosphere<\/h2>\n

Class 8 Social Science Atmosphere Textual Questions and Answers<\/h3>\n

I. Fill In The Blanks.<\/p>\n

Question 1.
\nThe two major gases of the atmosphere are _____
\nAnswer:
\nNitrogen and oxygen<\/p>\n

Question 2.
\nThe lowest layer of the atmosphere is _____
\nAnswer:
\nTroposphere<\/p>\n

Question 3.
\nThe average cur pressure of the atmosphere at the sea level is _____
\nAnswer:
\n1013.25 mb<\/p>\n

\"KSEEB<\/p>\n

Question 4.
\nWesterlies is also known as _____
\nAnswer:
\nAnti trade winds<\/p>\n

Question 5.
\nThe scientific study of weather is _____
\nAnswer:
\nMeteorology<\/p>\n

II. Answer The Following Questions:<\/p>\n

Question 1.
\nWhat is atmosphere?
\nAnswer:
\nThe thin blanket of air that surrounds the earth is called the Atmosphere. This layer of gases forms a protective boundary between the outer space and the earth\u2019s space. It is the second layer of the earth.<\/p>\n

Question 2.
\nName the important layers of the atmosphere.
\nAnswer:
\nThe atmosphere may be divided into five important layers. They are Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.<\/p>\n

Question 3.
\nWhat is the significance of the ozone layer?
\nAnswer:
\nThe ozone layer is the most important gas which absorbs \u2018ultraviolet rays\u2019 of the sun and protects all forms of life on the earth. This layer is free from clouds and other important weather phenomena and provides ideal flying conditions for jet aircraft.<\/p>\n

Question 4.
\nWhat is Doldrum? Where is it found?
\nAnswer:
\nThe Equatorial low-pressure belt is a zone of high temperature and low pressure. It lies between 0\u00b0 to 5\u00b0 North and South of the equator. This region gets direct rays of the Sun almost throughout the year. Hence air is always very warm and hot. This is a calm region with very little wind so it is called \u201cDoldrum\u201d means \u2018belt of clam\u2019. This region is also called the Inter-Tropical convergence zone where the trade Winds coverage.<\/p>\n

\"KSEEB<\/p>\n

Question 5.
\nName the different types of planetary winds.
\nAnswer:
\nPlanetary winds are also called permanent or prevailing or regular winds that blow more or less in the same direction throughout the year. Trade winds, westerlies, or Anti-trade winds, and the polar winds are the three types of planetary winds.<\/p>\n

Question 6.
\nWhat are the local winds? Give any two examples.
\nAnswer:
\nPeriodic winds are the result of variation in local temperature, pressure, humidity which in turn are attributed to the formation of air currents, crossing mountain ranges, valleys and other relief barriers.
\nEg:- Mountain breeze, Sea breeze, Valley breeze.<\/p>\n

Question 7.
\nMention the different types of clouds.
\nAnswer:
\nCloud is a mass of small water drops or ice crystal, formed by the condensation of the water in the atmosphere usually at a considerable height above the earth\u2019s surface. The important types of clouds are Stratus, Cumulus, Cirrus, Nimbus, etc.<\/p>\n

Question 8.
\nDistinguish between weather and climate.
\nAnswer:
\nWeather: The atmospheric conditions of a smaller area at a particular time is called weather. The scientific study of weather is called \u2018Meteorology\u2019. Climate: Climate is the average condition of the atmosphere over a long period of time of a larger area. The scientific study of climate is called \u2018Climatology\u2019.<\/p>\n

III. Define The Following:<\/p>\n

1. Ionosphere :
\nIt is also called Troposphere. It is the lowest layer of the atmosphere. It extends upto 18 kms at the equator and 8 Kms near the poles. All-weather changes occur in the troposphere.<\/p>\n

2. Normal lapse rate :
\nIt is the decreasing rate of temperature with the increase of altitude. The rate of decrease is 1\u00b0C for every 165 meters of 6.4\u00b0 for every 1000 meters of height.<\/p>\n

3. Torrid zone :
\nThis is the zone of high temperature. This region is found between 0\u00b0 or equator and Tropic of Cancer in the north and the Equator and Tropic of Capricorn in the south.<\/p>\n

4.Horse latitudes :
\nNorth subtropical high-pressure belt is found between 30\u00b0 to 35\u00b0 north latitudes popularly called \u2018horse latitude\u2019.<\/p>\n

5.Orographic rainfall :
\nIt is also called \u2018Mountain rainfall\u2019 or \u2018Relief rainfall\u2019. When moisture-laden air is obstructed by a mountain barrier, the air is forced to rise up. As the air rises upwards, it cools and gets saturated. Further cooling or this air causes condensation resulting in orographic or mountain rainfall.<\/p>\n

6. Climatology :
\nThe scientific study of climate is called Climatology.<\/p>\n

Class 8 Social Science Atmosphere Additional Questions and Answers<\/h3>\n

I. Multiple Choice Questions:<\/p>\n

1. The lowest layer of the atmosphere is ______
\n(a) Troposphere
\n(b) Stratosphere
\n(c) Mesosphere
\n(d) Exosphere.
\nAnswer:
\n(a) Troposphere<\/p>\n

\"KSEEB<\/p>\n

2. The layer which lies next to mesosphere is ______
\n(a) Exosphere
\n(b) Thermosphere
\n(c) Stratosphere
\n(d) Mesosphere.
\nAnswer:
\n(b) Thermosphere<\/p>\n

3. An atmospheric condition of a place at a given time is called ______
\n(a) Season
\n(b) Climate
\n(c) Weather
\n(d) Temperature.
\nAnswer:
\n(c) Weather<\/p>\n

4. The average weather condition of an area over a long period of time is called ______
\n(a) Temperature
\n(b) Weather
\n(c) Season
\n(d) Climate
\nAnswer:
\n(d) Climate<\/p>\n

5. Incoming solar radiation from the sun to the earth is called ______
\n(a) Insolation
\n(b) Isolation
\n(c) Isotherm
\n(d) Inflonation
\nAnswer:
\n(a) Insolation<\/p>\n

6. The instrument used to measure temperature is ______
\n(a) Barometer
\n(b) Thermometer
\n(c) Exometer
\n(d) Hydrometer
\nAnswer:
\n(b) Thermometer<\/p>\n

7. Air pressure is measured by an instrument called ______
\n(a) Hydrometer
\n(b) Exometer
\n(c) Barometer
\n(d) Thermometer.
\nAnswer:
\n(c) Barometer<\/p>\n

8. The unit used to show the pressure is ______
\n(a) Megabar
\n(b) Multibar
\n(b) Minibar
\n(d) Millibar.
\nAnswer:
\n(d) Millibar.<\/p>\n

\"KSEEB<\/p>\n

9. \u2018Doldrum\u2019 means ______
\n(a) Calm
\n(b) Bell of calm
\n(c) Calm
\n(d)Salm
\nAnswer:
\n(b) Bell of calm<\/p>\n

10. The instrument used to measure the speed of the wind is ______
\n(a) Barometer
\n(b) Ammeter
\n(c) Anemometer
\n(d) Hexometer.
\nAnswer:
\n(c) Anemometer<\/p>\n

II. Fill In The Blanks<\/p>\n

Question 1.
\n______ is the third layer in the earth\u2019s atmosphere.
\nAnswer:
\nMesosphere.<\/p>\n

Question 2.
\n______ and ______ are the important thermometers used to measure atmospheric temperature.
\nAnswer:
\nCentigrade and Fahrenhei<\/p>\n

Question 3.
\n______ is the most important factor that influences atmospheric pressure.
\nAnswer:
\nTemperature<\/p>\n

Question 4.
\n______ is the horizontal movement of the air on the surface of the earth.
\nAnswer:
\nWind<\/p>\n

Question 5.
\nThe direction of the wind is shown by an instrument called ______
\nAnswer:
\nWind vane or weather clock.<\/p>\n

Question 6.
\n______ are also called periodic winds.
\nAnswer:
\nSeasonal winds<\/p>\n

Question 7.
\nCumulus clouds are popularly called ______
\nAnswer:
\nWool packs.<\/p>\n

\"KSEEB<\/p>\n

Question 8.
\nCirrus clouds popular name is ______
\nAnswer:
\nMare\u2019s tail or witch\u2019s broom<\/p>\n

III. Answer The Following Questions:<\/p>\n

Question 1.
\nWhat are the components of the atmosphere?
\nAnswer:
\nThe important components of the atmosphere are Nitrogen, oxygen, Argon, carbon dioxide, ozone.<\/p>\n

Question 2.
\nWhat are the important factors that influence atmospheric temperature?
\nAnswer:
\nThe important factors that influence atmospheric temperature are latitude, altitude, distance from the sea, wind, ocean currents, relief, clouds, rainfall. Etc.<\/p>\n

Question 3.
\nWhat is Torrid zone?
\nAnswer:
\nThis is the zone of high temperature. This region is found between 0\u00b0 or equator and Tropic of cancer in the north and the equator and Tropic of Capricorn in the south.<\/p>\n

Question 4.
\nWhat is temperate zone?
\nAnswer:
\nThis is the region where the temperature is neither very hot nor cold. This region lies between 23\u00bd\u00b0N to 66\u00bd\u00b0N and 23\u00bd\u00b0S to 66\u00bd\u00b0S.<\/p>\n

Question 5.
\nWhat are Isotherms?
\nAnswer:
\nIsotherms are lines drown on the map or globe connecting places having the same temperature.<\/p>\n

Question 6.
\nWhat are Isobars?
\nAnswer:
\nThese are Imaginary lines drawn on the map or globe connecting places having the same pressure.<\/p>\n

Question 7.
\nWhat is atmospheric pressure?
\nAnswer:
\nAir has weight and it exerts pressure. This is called atmospheric pressure.<\/p>\n

\"KSEEB<\/p>\n

Question 8.
\nName the major pressure belts of the earth.
\nAnswer:
\nMajor pressure belts of the earth are:<\/p>\n

    \n
  1. The equatorial low-pressure belt.<\/li>\n
  2. North sub-tropical high-pressure belt.<\/li>\n
  3. South sub-tropical high-pressure belt.<\/li>\n
  4. North subpolar low-pressure belt.<\/li>\n
  5. South subpolar low-pressure belt.<\/li>\n
  6. North polar high-pressure belt.<\/li>\n
  7. South polar high-pressure belt.<\/li>\n<\/ol>\n

    Question 9.
    \nWhat is the cloud?
    \nAnswer:
    \nClouds are a mass of small water drops or ice crystals, formed by the condensation of the water in the atmosphere, usually at a considerable height above the earth\u2019s surface.<\/p>\n

    Question 10.
    \nName the types of Rainfall.
    \nAnswer:
    \nThe important types of Rainfall are:<\/p>\n

      \n
    1. \u00a0Convectional rainfall<\/li>\n
    2. \u00a0Orographic rainfall and<\/li>\n
    3. Cyclonic rainfall.<\/li>\n<\/ol>\n

      IV Terms to Remember<\/p>\n

      1. Insolation: It means incoming solar radiation from the sun to the earth.<\/p>\n

      2. Inversion of temperature: In some situations, temperature also increases with increasing height. This takes place is mountain valleys during long winter nights with a clear sky, dry air, no wind, and snow-covered surface.<\/p>\n

      3. Anemometer: Used to measure the speed of the wind.<\/p>\n

      4. Roaring forties: The westerlies of the southern hemisphere are very strong over the oceans around 50\u00b0 south latitudes.<\/p>\n

      \"KSEEB<\/p>\n

      5. Nimbus: Nimbus clouds are rain clouds that occur at low levels. These clouds have the shape of stratus or cumulus. They are dark grey or black in appearance. They cause heavy rainfall or snowfall.<\/p>\n

      6. Meteorology: The scientific study of weather is Meteorology.<\/p>\n","protected":false},"excerpt":{"rendered":"

      Students can Download Geography Chapter 3 Atmosphere Questions and Answers, Notes, KSEEB Solutions for Class 8 Social Science\u00a0helps you to revise complete Karnataka State Board Syllabus and score more marks in your examinations. Karnataka State Syllabus Class 8 Social Science Geography Chapter 3 Atmosphere Class 8 Social Science Atmosphere Textual Questions and Answers I. Fill …<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/3976"}],"collection":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/comments?post=3976"}],"version-history":[{"count":0,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/posts\/3976\/revisions"}],"wp:attachment":[{"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/media?parent=3976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/categories?post=3976"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kseebsolutions.guru\/wp-json\/wp\/v2\/tags?post=3976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}