8th Standard Syllabus & Materials
8th Standard
TN 8th Tamil இயல் 3 - கல்வி கரையில - வினைமுற்று Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - மயங்கொலிகள் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை -பட்டமரம் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - இயற்கையை போற்றுவோம் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 1 - தமிழ் இன்பம் - ஆழிக்கு இணை Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2-ஈடில்லா இயற்கை - திருக்குறள் Important Questions And Answers Study Material - QB365 Set A

Published on: 13/05/2022
QB365 provides detailed and simple solution for every book back questions in class 8 Social Science subject.It will helps to get more idea about question pattern in every book back questions with solution.
latest Book back QuestionsDownload Tamil Nadu 8th Standard Social Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Social Science Test

1.
What are “Isolines”?
2.
Write a short note on “Planetary winds”
3.
What is meant by atmospheric pressure?
4.
What is insolation?
5.
Define ‘weather’.
1.
i) Isolines are those which join the places of equal values.
ii) Isolines are given different names based on the weather element they represent.
2.
Planetary Winds are the winds which blow almost in the same direction throughout the year.
So, they are called as Permanent or planetary winds.
E.g: Trade winds, westerlies and Polar easterlies.
3.
i) The weight of air above a given area on the earth's surface is called atmospheric pressure or air pressure.
ii) The air pressure is measured by Barometer.
iii) The standard air pressure at sea level is 1013.25 mb.
4.
(i) Insolation is the solar radiation that reaches the earth's surface.
(ii) It is measured by the amount of solar energy received per square centimetre per minute.
(iii) Insolation affects temperature.
(iv) The more the insolation the higher the temperature.
5.
1. Weather is the day today conditions of the atmosphere at any place as regards sunshine, temperature, cloud cover, Wind fog condition, air pressure, humidity, precipitation and such other elements.
2. It refers to short periods like a day, a week, a month or a little longer.
3. Weather changes from time to time in a day and one period to the other in a year.
4. The weather is cool in winter and hot in summer.
8th Standard Syllabus & Materials
8th Standard
TN 8th Tamil இயல் 3 - கல்வி கரையில - பாடறிந்து ஒழுகுதல் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 3-கல்வி கரையில - பல்துறைக் கல்வி Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 3-கல்வி கரையில - புத்தியைத் தீட்டு Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - தமிழர் மருத்துவம் ( நேர்காணல்) Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards