Some natural phenomena

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

• becomes positively charged while the cloth has a negative charge.

• and the cloth both acquire positive charge.

• and the cloth both acquire negative charge.

• becomes negatively charged while the cloth has a positive charge.

The movement of the earth’s plates causes

• Cyclones

• Lightning

• Earthquake

• Thunderstorm

Two charged objects are brought close to each other. Choose the most appropriate statement from the following options:

• they may repel

• they may attract

• they may attract or repel depending on the type of charges they carry

• there will be no effect

Which of the following is not likely to cause Tsunami?

• A major nuclear explosion undersea

• Earthquake

• Volcanic eruption

• Lightning

The device used to measure intensity of earthquakes is

• seismograph

• odometer

• hygrometer

• anemometer

The boundaries of the earth’s plate are known as

• seismic zone

• fault zones

• mantle

• outer core

The outermost layer of earth is called

• Crust

• Mantle

• Inner core

• Outer core

Earthquakes can cause

(i) Tsunami

(ii) Landslide

(iii) Floods

(iv) Lightning

• (i), (ii) & (iii)

• (ii) & (iv)

• (ii), (iii) & (iv)

• (iii) & (iv)

the process of transfer of charges from a charged object to earth is called

• earthing

• lightning

• charge changing

• electron movement

tall buildings are protected from damage by using a lightning ____________________ .