Download the questions here

 

The password to open the file is -  teachooisbest

 

Do all objects get charged by rubbing?

Answer

Only insulators (materials which do not conduct electricity) can be charged by rubbing, that is by providing friction.

 

The earth’s plate responsible for causing earthquakes is

(a) the crust of the earth          

(b) the mantle of the earth

(c) the inner core of the earth

(d) the outer core of the earth

 

Answer 

(a) the crust of the earth

 Earthquakes are caused by tectonic movements in the Earth's crust.

Layers of Earth - Teachoo.jpeg

Collision of Plates Causing Earthquake - Teachoo.jpg

As per convention, what is the charge on a glass rod when it is rubbed with silk cloth?

  1. Positive
  2. Negative
  3. Either 'a' or 'b'
  4. No charge

 

Answer

  1. Positive
  1. Class 8
  2. Chapter 15 Class 8 - Some Natural Phenomena
Class 8
Chapter 15 Class 8 - Some Natural Phenomena

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.