Describe an activity to show that opposite charges attract.

What are static charges? Give some examples of objects having static charges.

What is earthing? Why is it needed?

Give three examples of spark produced by static charges other than lightning.

Why is it necessary to take safety measures during lightning?

What is a lightning conductor?

Which natural phenomenon produces both light and sound? What is the possible cause of this phenomenon?

With the help of a diagram, explain the interaction between different types of charges.

What is an electroscope? Draw a diagram to describe its construction.