Some Natural Phenomena 1

The _________________ of earth's crust are in continual motion.

Like charges _______________ and unlike charges _________________ each other.

In an electroscope, the aluminium leaves diverge because like charges ________________.

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

__________________ 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 ____________

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