NCERT Solutions Curiosity Chapter 7 .3.3 Air temperature — Activity 7.7: Let us analyse

Book page 134 & 1357 Updated on2026-09-05

Q1.

Read or listen to the weather reports for a place for 10 successive days. Record the maximum and minimum air temperature for each day in Table 7.3. Analyse the data in Table 7.3.

Answer

Pick one place — your own town is best — and one source (newspaper, TV news or an internet weather page). Use the same source every day, and note both figures in °C.

Sample answer (Jaipur, ten days in February — your own table will have your own place and dates):

S. no.	Date	Maximum air temperature	Minimum air temperature
1.	1 Feb	24 °C	10 °C
2.	2 Feb	25 °C	11 °C
3.	3 Feb	23 °C	9 °C
4.	4 Feb	26 °C	12 °C
5.	5 Feb	27 °C	13 °C
6.	6 Feb	25 °C	12 °C
7.	7 Feb	22 °C	8 °C
8.	8 Feb	24 °C	10 °C
9.	9 Feb	28 °C	14 °C
10.	10 Feb	29 °C	15 °C

Analysing this data:

Highest maximum = 29 °C (10 Feb); lowest maximum = 22 °C (7 Feb).
Highest minimum = 15 °C (10 Feb); lowest minimum = 8 °C (7 Feb).
The daily difference (maximum – minimum) stays around 13 °C to 14 °C.
Over the ten days both the maximum and the minimum are slowly rising — winter is giving way to summer.

Tip: Draw the two columns as two lines on a graph, days along the bottom and temperature in °C up the side. The rise and fall shows up at a glance.

Q2.

Does the maximum and minimum temperature stay at the same level during these days?

Answer

No. Both the maximum and the minimum temperature change from day to day.

Why it happens: weather depends on several factors at once — clouds, wind, rain, humidity and how strongly the Sun shines. Because those factors change every day, these temperatures usually vary every day too.

There is, however, a clear seasonal pattern behind the daily jumps:

As we approach the summer season, the temperature rises.
During the winter season, it falls.

Did you know? Air temperature is an important weather parameter and is monitored at weather stations all over the world. Along with other parameters, this data is used for making weather forecasts. Anna Mani — the “Weather Woman of India”, quoted at the start of this chapter — built many of the instruments India uses for exactly this work.

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