GEOGRAPHYWORKSHEETCLASS VII Chapter 4 (AIR)I. Choose the correct answer.1. Our atmosphere is divided into ________________ layers.(a) 5 (b) 4 (c) 82. _____________________ measures the temperature.(a) Barometre (b) Thermometer (c) Rain Gauge3. In _________________ temperature rises, very rapidly with increasing height.(a) Thermosphere (b) Troposphere (c) Stratosphere4. Green plants produce __________________ during photosynthesis.(a) Nitrogen (b) Carbondioxide (c) Oxygen5. The uppermost layer of the atmosphere is known as ________________.(a) Stratosphere (b) Exosphere (c) Troposphere6. _________________ is the second most plentiful gas in the air.(a) Nitrogen (b) Oxygen (c) Carbondioxide7. Almost all the weather phenomena like rainfall, fog and hailstorm occur in ________(a) Stratosphere (b) Troposphere (c) Exosphere8. _________________ helps in radio transmission.(a) Troposphere (b) Exosphere (c) Thermosphere9. Mesosphere the third layer of the atmosphere extends up to the height of ______ km(a) 80 (b) 50 (c) 100II. Fill in the blanks1. Cold air is denser and _________________. That is why it tends to sink down.2. _____________, ______________, _______________, _______________,______________ are the five layers of atmosphere.3. On the Celsius scale the water freezes at ____________ and boils at _____________.4. ________________ need nitrogen for their survival.5. Radio waves transmitted from the earth are reflected back to the earth by __________________.6. _____________________ measures atmospheric pressure.7. Plants use _______________ to make their food and release _____________.8. Low pressure is associated with cloudy skies and ______________ weather.9. A wind is named after the direction from which it glows, example the wind blowing fromthe west is called ________________.10. In areas where temperature is high the air gets heated and rises. This creates a______________ area.11. The rise in temperature causes the snow in coldest part of the world to melt. As aresult the sea level _______________, causing _______________ in the coastal areas.12. Stratosphere extends up to a height of ____________ km.13. The increased volume of carbondioxide is affecting the earth’s ________ and climate.14. _____________ and ______________ are two gases which make up the bulk of theatmosphere.15. The standard unit of measuring temperature is degree Celsius. It was invented by_____________. Zoobi Meri worksheet Puri Karega main uske answer ko brainliest Maaf karunga​