Question 1

Which of the following can be charged easily by friction?

Accepted Answer

An ebonite rod rubbed with fur or a plastic scale rubbed with dry hair acquires an electric charge easily due to friction. Metals generally do not show this easily unless insulated because charges conduct away through the body.

Question 2

When a plastic refill is rubbed with polythene, it acquires:

Accepted Answer

When a plastic refill is rubbed with polythene, it gets charged by friction. It acquires a static electric charge, which can attract small bits of paper.

Question 3

The process of transferring charge from a charged object to the earth is called:

Accepted Answer

Earthing is the process of transferring charge from a charged object to the earth, ensuring safety from electrical shocks.

Question 4

Lightning is an electric spark, but on a huge scale, taking place in:

Accepted Answer

Lightning is a massive electric spark that occurs between clouds, or between clouds and the earth during thunderstorms.

Question 5

An instrument used to detect whether an object is charged or not is called:

Accepted Answer

An electroscope is a device used to detect the presence of an electric charge on a body.

Some Natural Phenomena — NCERT Class 8 Science Important Questions & Revision Notes