Moisture in the atmosphere
Q 1 : What is evaporation ? (page no 47)
Ans : The change of water_ _ _ _ _ _ _ is known as evaporation .
Q 2 : What is Relative Humidity ? ( page 48)
Ans : Relative Humidity is the ratio _ _ _ _ _ _ _ expressed as a percentage .
Q 3 : What is absolute humidity ? ( page 48 )
Ans : Absolute humidity is _ _ _ _ _ _ _per cubic centimetre of air .
Q 4: Name the instrument that shows the relative humidity of a place . ( Page 48 )
Q 5 : What is dew point ? ( Page 48
Ans : Dew point the temperature _ _ _ _ _ _ tiny droplets of water .
Q 6 : What is condensation ? ( page 48 )
Ans : When air is cooled _ _ _ _ _ _ _ is called condensation .
Q 7 : How are cloud formed ? ( Page 49 )
Ans : There are large quantities of _ _ _ _ _ _ _ _ _ _ _ and form clouds .
Q 8 : Describe the four basic types of clouds ? ( page 49 )
Q 9 : When does precipitation occur ? page 50 )
Ans : When condensation takes place _ _ _ _ _ _ _ is called precipitation .
Q 10 : What are the different forms of precipitation ? ( page 50 )
Q 11 : How are hailstones formed ? (page 50 )
Ans : Hailstones are small lumps of ice _ _ _ _ _ _ _ _ that fall to the earth .
Q 12 : How does snow fall occur ? ( page 50 )
Ans : When the air temperature _ _ _ _ _ _ _ _ is known as snowfall .
Q 13 : What is sleet ? page 50
Q 14 : How is convectional rainfall caused ? page 50 )
Ans When the warm air rises _ _ _ _ _ _ _ _ _ _ . It is typical of equatorial regions .
Q 15 : How is relief rainfall caused ? ( page 50 & 51 )
Ans : Relief rain is caused _ _ _ _ _ leeward side or rain shadow .
Q 16 : What is cyclonic rainfall ? Name the regions which receive cyclonic rainfall ? page 51
Ans : Cyclonic rainfall originates _ _ _ _ _ _ _ _ _ _ from the Mediterranean Sea .
( Dear boys of class 8 B I hope that you will do the rest exercises like fill in the blanks etc on your own with the help of your text book )
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