8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard கணிதம் இயற்கணிதம் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard கணிதம் எண்கள் Important Questions And Answers Study Material - QB365 Set B
NEW8th Standard
Tamilnadu 8th Standard கணிதம் எண்கள் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
Tamilnadu 8th Standard Social Science பொருளியல் - பொது மற்றும் தனியார் துறைகள் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science குடிமையியல் - நீதித்துறை Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science குடிமையியல் - பாதுகாப்பு மற்றும் வெளியுறவுக் கொள்கை Important Questions And Answers Study Material - QB365
Published on: 13/05/2022
QB365 provides detailed and simple solution for every Book back Questions in class 8 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 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 Science Test1.
Define magnetic field?
2.
What is artificial magnet? Give examples.
3.
Distinguish between natural and artificial magnets?
4.
Earth acts as a huge bar magnet. Why? Give reasons.
5.
How can you identify non-magnetic materials? Give an example of a non-magnetic material.
1.
Magnetic field is defined as the space around a magnet in which its magnetic effect or influence is observed. It is measured by the unit tesla or gauss.
2.
(i) Artificial magnets are man-made magnets.
(ii) They can be made in different shapes and dimensions.
(iii) Ex: U-shaped magnet, Bar magnet, Cylindrical Magnets.
3.
| Natural magnets | Arificial magnets |
|---|---|
| These are found in nature and have irregular shapes and dimensions |
These are man-made magnets. They canbe made in different shapes and dimensions. |
| The strength of a natural magnet is well determined and difficult to change. |
It can be made with required and specific strength. |
| These are long lasting magnets. |
Their properties are time bound. |
| They have a less usage. | They have a vast usage in day to day life. |
| Ex: loadstone | Ex: U-shaped, Bar magnet |
4.
A freely suspended magnetic needle at a point on the Earth comes to rest approximately along the geographical north-south direction. This shows that the Earth behaves like a huge magnetic dipole with its magnetic poles located near its geographical poles.
5.
Materials which are not attracted by magnets are called non-magnetic materials. E.g: plastics, rubber, wood
8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard Social Science புவியியல் - புவிப்படங்களைக் கற்றறிதல் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science புவியியல் - கண்டங்களை ஆராய்தல் (ஆப்பிரிக்கா, ஆஸ்திரேலியா மற்றும் அண்டார்டிகா) Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science புவியியல் - தொழிலகங்கள் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science வரலாறு - காலங்கள் தோறும் இந்தியப் பெண்களின் நிலை Important Questions And Answers Study Material - QB365
Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards
