Taapmaan aur Baarish Naapna

Class 7 Social Science · Chapter 2: Mausam ko Samajhna · NCERT Exploring Society: India and Beyond section 2.2

Seekho

Thermometer taapmaan Celsius (°C) ya Fahrenheit (°F) mein naapta: 15 °C = 59 °F. Kuch abhi ka (aas-paas ka) taapmaan dikhaate; kuch din ka adhiktam aur nyuntam darj karte. Digital thermometer zyaada sateek aur zyaada data rakhte. Bina thermometer bhi sanket dikhte: thand mein naariyal tel jam jaata aur dahi dheere jamta.

In paathyaankon se hum upyogi aankde nikaalte. Taapmaan ka antar = adhiktam − nyuntam; ausat dainik taapmaan = (adhiktam + nyuntam) ÷ 2. Meher ke shehar mein Somvaar ko 32 °C aur 18 °C: antar 14 °C, ausat 25 °C. Bharat Mausam Vigyaan Vibhaag (IMD), 1875 mein bana, ka vaakya "aadityaat jaayate vrishti": Sooraj se baarish utpann hoti.

range = max − min; mean = (max + min) ÷ 2

Baarish varsha maapi (rain gauge) se naapi jaati: keep baarish ko scale wale cylinder mein le jaati. Agar paani 5 mm gehra, to wahaan 5 mm baarish. Barf naapne se pehle pighlaate. Neel ki class bottle se ek banaakar khule maidaan mein oonche chabootre par, deewaar aur pedon se door, rakhti aur roz ek hi samay padhti.

Explore: varsha maapi kahaan rakhein?

1. Har jagah sort karo.

Yaad rakho

• Thermometer taapmaan naapta (°C/°F); antar = adhiktam − nyuntam, ausat = (adhiktam + nyuntam) ÷ 2.
• Varsha maapi baarish mm mein naapti; IMD 1875 mein bana.

Quick check

Adhiktam 31 °C aur nyuntam 17 °C. Ausat dainik taapmaan?

1. 24 °C
2. 14 °C
3. 48 °C
4. 31 °C

Socho

Varsha maapi ped ke neeche ya deewaar ke paas kyun nahi rakhni?

Practice

Teen levels (easy, medium, hard) ke naye sawaalon se practice karo, kuch hands-on, hints aur hal ke saath. Topic poora karne ke liye pichhle 5 mein se 4 sahi karo.