Question

II. Fill in the blanks

1. 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_____________.

Answer 1

1. Much heavier than warm air

2. troposphere,stratosphere,mesosphere,thermosphere and exosphere

3. 0°C..nd 100°C

4. Human beings

5. Ionosphere

6. Barometer

7. carbon dioxide and release oxygen

8. Wet

9. Coriolis force, 

14. Nitrogen and Oxygen

15. Anders Celsius

Hope this helped...

Answer 2

1. Heavy

2. Lithosphere , Stratosphere , Mesosphere , Thermosphere , Exosphere.

3. 0 , 100

4. Nitrogenous Plants.

5. Skywave

6. Barometer

7. Sunlight , Oxygen

8. Wet

9. Coriolis Force

10. Low pressure area

11. Increase , Tsunami

12. 50 --60

13. Temperature

14. Nitrogen , Oxygen

15.Andres Celcius

Please, please mark it as brainliest.