Check sibling questions
Class 8
Chapter 15 Class 8 - Some Natural Phenomena

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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

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Economics, Accounting and English at Teachoo