Science Give the definition [1 M]

Trembling or shaking of the Earth.

Earthquakes may cause tsunamis in oceans, resulting in huge damage in coastal areas.

Electrical charge can be transferred from a charged object to another through a metal conductor.

A storm accompanied by thunder and lightning.

The loud noise which accompanies lightning.

The seismic waves are recorded by an instrument in the form of a graph called the seismograph.

The power of an earthquake is expressed in terms of magnitudes on a scale called the Richter Scale.

When the charge of an object is due to the loss of electrons, it is called a positive charge.

When the charge of an object is due to the excess of electrons, it is called a negative charge.

Lightning rod is a device used to secure tall buildings from the effect of lightning conductor. A metallic rod taller than the height of the building is installed in the walls of the building during its construction to protect it from the effect of lightning.

The process of electric discharge between clouds and the Earth or between different clouds causes lightning.

Electroscope is a device used to test whether an object is carrying charge or not.

An earthquake is a sudden shaking or trembling of the Earth. It is caused by a disturbance deep inside the earth’s crust (i.e., by the movement of Earth’s plates).

The outermost layer of the earth is not in one piece. It is fragmented. Each fragment is called a plate.

When negative charges from the clouds and positive charges on the ground meet, a huge amount of energy is produced as bright light and sound, which we see as lightning. The process is called electric discharge.

The process of transfer of charges from a charged object to the Earth is called earthing.

When charges move they constitute an electric current.

The chemical charge generated by rubbing is called static electricity because these charges do not transmit.