An electroscope is a device which is used to find if an object is

Which of the following is not likely to cause tsunami?

The outermost layer of the earth is called

Which of the following cannot be charged easily by friction?

When a glass rod is rubbed with a piece of silk cloth, the rod

Like charge _________ and unlike charges ________ each other.

Earthquake is caused by _____________ a deep inside the earth's crust.

It is ____________ possible to predict the occurrence of an _____________.

Ritcher scale used to express the _____________ of an earthquake.

An __________ may be used to detect whether a body is charged or not.

We cannot predict cyclones.

Earthquake can be predicted in advance.

Lightning conductor cannot protect a building from lightning.

When a plastic refill is rubbed with polythene, no electric charge is developed.

If a thunderstorm occurs, there is always a possibility of lightning and cyclones accompanying it.

An American scientist who showed the lightning in day to day activity.

What are charged objects?

Name the instrument used to measure earthquake.

If a charged plastic straw is brought near another uncharged plastic straw, what will happen?

If an object is touched with the metal top of an electroscope its aluminium leaves diverge then what conclusion we get from this observation?

Mention the names of the natural phenomena which can be predicted to some extent.

How does earthing help to protect buildings?

Explain why a charged body loses its charge if we touch it with our hand.

List three states in India where earthquakes are more likely to strike.

Explain how do the buildings can be designed and constructed in seismic zones.

What are lightning conductors? How is it used?

Explain why it is safer to use a wireless telephone instead of a land line telephone during lightning.

Explain protection against earthquake.