The upper layer of the earth is called

Seismic waves recorded by an instrument called

Increase in 2 in magnitude of richter scale means … times more destructive energy.

Hyderabad lies in seismic zone of

Unlike charges … each other.

Which of the following cannot be charged easily by friction?

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

Discharge takes place between negative and positive charge which produces streaks of bright light is called

The outermost layer of the earth is fragmented. Each fragment is called

The waves produced by tremors on the surface of earth is called

… measures energy released by the earthquake more accurately.

Unlike magnetic each other.

Like charges each other.

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

… protects us from electric shocks due to any leakage of electric charge.