(a) True

Earthquakes occur all the time, all over the world.

i. They are not even noticed.

ii. Most earthquakes are much less frequent.

iii. They can cause a lot of damage to life and property.

Hence, the given statement is true.

(b) True

The plates of the outermost layer of the earth are always in continuous motion. The collision between the plates causes a disturbance in the earth’s crust.

(c) True

Tremors are caused by the disturbance deep down inside the uppermost layer of the earth called crust.

i. Tremors can also be caused by the eruption of a volcano.

ii. The eruption of a volcano causes a disturbance in the earth’s crust.

Hence, the given statement is true.

(d) False

The process of electric discharge occurs between two or more clouds or between clouds and earth. This leads to lightning. Lightning is caused by the accumulation of charges in the clouds.

Hence, the given statement is false.

(e) True

Bathing outdoors should be avoided during thunderstorms to avoid contact with running water otherwise the thunderstorm strike can bring electric shock and can destroy life.