Available Answers

1. 1.

   Give one word.

   1. the liquid medium generally used in thermometers
   2. instrument used for recording humidity
   3. the scientists who study weather
   4. precipitation in the form of water drops
   5. when the relative humidity is 100 per cent, the air is said to be
2. 2.

   Study the table and answer the questions.

   1. Study the climate data of Jaisalmer given below and answer the questions.

   Month	Jan	Feb	Mar	April	May	June	July	Aug	Sept	Oct	Nov	Dec
   Temp (in ºC)	14.2	15.8	20.3	28	33.5	34.3	32.4	30.7	30.1	27	22.6	15.1
   Rainfall (in mm)	5.4	9.0	6.2	10.3	15.1	30.2	86.4	77.2	38.9	9.5	1.6	2.7

   1. Calculate the annual range of temperature of Jaisalmer.
   2. What is the total annual rainfall of Jaisalmer? Which is the rainiest month?
3. 3.

   Weather recording is done in weather stations. Give reasons.

4. 4.

   Mercury is used in thermometers. Give reasons.

5. 5.

   Celsius scale is more popular than Kelvin scale. Give reasons.

6. 6.

   A Stevenson's screen is placed 1.5 metres above the ground. Give reasons.