Test: Some Natural Phenomena - 1

The outermost layer of earth is called crust . The middle layer is called mantle and innermost layer is called core.

Earthquake, cyclone and lightning are natural phenomenon as it occurs naturally but cooking is a manmade process.

Sudden trembling or shaking of the earth due to disturbance deep down its top layer called as the crust.

Lightening occurs when two oppositely charged clouds come in contact of other that cause electric spark on huge scale.

If the charges are like charges they repel each other and if the charges are unlike charges they attract each other.

Building can be protected from lightning by using lightning rod at the top of building. Lightening rod is placed at highest point of the building.

Tsunami is caused due to disturbance deep down the sea. Lightning will not cause any disturbance for the sea whereas earthquakes, A major nuclear explosion undersea and Volcanic eruption can cause a disturbance in the sea.

Electroscope is a device used to detect the presence of charge. It consists of two leaves like structure that expand when charged particle is charged.

Like charges repel each other and unlike charge attract each other.

The process of transferring a charge from a charged body to the earth is called Earthing.