Some Natural Phenomena 1

The (a)   of earth's crust are in continual motion.

Like charges _______________ and unlike charges _________________ each other.

(a)  

In an electroscope, the aluminium leaves diverge because like charges (a)   .

(a)   is provided in buildings to protect us from electrical shocks due to any leakage of electrical current.

(a)   is also an electric spark, but on a huge scale.

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

Like charges attract each other.

• true

• false

A charged glass rod attract a charged plastic straw.

• true

• false

Lightning conductor cannot protect a building from lightning.

• false

• true

Earthquakes can be predicted in advance.

• true

• false